Como Usar o Histograma para Data Science.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Como Usar o Histograma para *Data Science*\n",
    "\n",
    "![Data Science, Python e matplotlib](http://sigmoidal.ai/wp-content/uploads/2019/07/maxresdefault-1-1.jpg)\n",
    "\n",
    "\n",
    "**[Veja o artigo deste notebook no blog sigmoidal.ai](http://sigmoidal.ai/2-tipos-de-graficos-importantes-data-science)**\n",
    "\n",
    "---\n",
    "\n",
    "A visualização de dados é uma parte fundamental do **Data Science**, e deve estar presente no kit de qualquer cientista de dados que esteja querendo tirar *insights* valiosos de seus bits.\n",
    "\n",
    "Um data scientist pode usar gráficos basicamente para duas finalidades distintas:\n",
    "\n",
    "* Para explorar os dados durante a fase da Análise Exploratória; e\n",
    "* Para comunicar os resultados aos stakeholders e decisores (*decision-makers*).\n",
    "\n",
    "Mais do que saber construir modelos de **Machine Learning** e extrair previsões a partir de dados passados, você precisa construir cada vez mais sua habilidade de produzir visualizações úteis e que melhorem a qualidade do seu projeto.\n",
    "\n",
    "**Saber qual tipo de gráfico usar para cada situação vai fazer muita diferença**, testar as hipóteses levantadas e transmitir aos outros aquilo que você descobriu.\n",
    "\n",
    "Hoje vou trazer um dos principais gráficos usados em todas as fases de uma Análise de Dados, o **HISTOGRAMA**!\n",
    "\n",
    "Para ver como usar esses tipo de gráfico, vou aplicar ele na pesquisa anual de desenvolvedores do Stack Overflow com os resultados de 2018.\n",
    "\n",
    "***Para ver o artigo completo, [acesse o blog](http://sigmoidal.ai/2-tipos-de-graficos-importantes-data-science)***"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Notebook do Artigo\n",
    "\n",
    "Segue o código para você acompanhar com o artigo completo da [sigmoidal.ai](http://sigmoidal.ai)\n",
    "\n",
    "### Download do dataset da Stack Overflow"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "# importar pacotes\n",
    "import pandas as pd\n",
    "import matplotlib.pyplot as plt\n",
    "import seaborn as sns\n",
    "import urllib.request\n",
    "import os\n",
    "\n",
    "# confugurações do notebook\n",
    "pd.options.display.max_columns = None\n",
    "%matplotlib inline"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[+] O arquivo 'survey-results-public.csv' já existe na pasta...\n"
     ]
    }
   ],
   "source": [
    "# URL com os dados da survey do Stack Overflow\n",
    "DATA_URL = \"https://s3.amazonaws.com/video.udacity-data.com/topher/2018/February/5a8cb654_survey-results-public/survey-results-public.csv\"\n",
    "\n",
    "def get_survey_data(data_url=DATA_URL):\n",
    "    \"\"\"\n",
    "    Baixa os dados da survey do Stack Overflow.\n",
    "    \n",
    "    Parâmetros:\n",
    "        data_url <string>: Endereço do arquivo csv com a survey do Stack Overflow\n",
    "        \n",
    "    Retorna:\n",
    "        None\n",
    "    \"\"\"\n",
    "    csv_file = data_url.split(os.sep)[-1]\n",
    "    \n",
    "    if not os.path.isfile(csv_file):\n",
    "        urllib.request.urlretrieve(DATA_URL, 'survey-results-public.csv')\n",
    "        print(\"[+] Arquivo baixado...\")\n",
    "        \n",
    "    else:\n",
    "        print(\"[+] O arquivo '{}' já existe na pasta...\".format(csv_file))\n",
    "        \n",
    "# baixar os dados do Stack Overflow\n",
    "get_survey_data()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Análise do DataFrame"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "154 colunas e 51392 linhas de entrada.\n"
     ]
    }
   ],
   "source": [
    "# importar os dados do arquivo csv para um DataFrame no Pandas\n",
    "df = pd.read_csv('survey-results-public.csv')\n",
    "\n",
    "# ver a quantidade de entradas do arquivo\n",
    "print(\"{} colunas e {} linhas de entrada.\".format(df.shape[1], df.shape[0]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
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       "<div>\n",
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       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
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       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
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       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
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       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Respondent</th>\n",
       "      <th>Professional</th>\n",
       "      <th>ProgramHobby</th>\n",
       "      <th>Country</th>\n",
       "      <th>University</th>\n",
       "      <th>EmploymentStatus</th>\n",
       "      <th>FormalEducation</th>\n",
       "      <th>MajorUndergrad</th>\n",
       "      <th>HomeRemote</th>\n",
       "      <th>CompanySize</th>\n",
       "      <th>CompanyType</th>\n",
       "      <th>YearsProgram</th>\n",
       "      <th>YearsCodedJob</th>\n",
       "      <th>YearsCodedJobPast</th>\n",
       "      <th>DeveloperType</th>\n",
       "      <th>WebDeveloperType</th>\n",
       "      <th>MobileDeveloperType</th>\n",
       "      <th>NonDeveloperType</th>\n",
       "      <th>CareerSatisfaction</th>\n",
       "      <th>JobSatisfaction</th>\n",
       "      <th>ExCoderReturn</th>\n",
       "      <th>ExCoderNotForMe</th>\n",
       "      <th>ExCoderBalance</th>\n",
       "      <th>ExCoder10Years</th>\n",
       "      <th>ExCoderBelonged</th>\n",
       "      <th>ExCoderSkills</th>\n",
       "      <th>ExCoderWillNotCode</th>\n",
       "      <th>ExCoderActive</th>\n",
       "      <th>PronounceGIF</th>\n",
       "      <th>ProblemSolving</th>\n",
       "      <th>BuildingThings</th>\n",
       "      <th>LearningNewTech</th>\n",
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       "      <th>DiversityImportant</th>\n",
       "      <th>AnnoyingUI</th>\n",
       "      <th>FriendsDevelopers</th>\n",
       "      <th>RightWrongWay</th>\n",
       "      <th>UnderstandComputers</th>\n",
       "      <th>SeriousWork</th>\n",
       "      <th>InvestTimeTools</th>\n",
       "      <th>WorkPayCare</th>\n",
       "      <th>KinshipDevelopers</th>\n",
       "      <th>ChallengeMyself</th>\n",
       "      <th>CompetePeers</th>\n",
       "      <th>ChangeWorld</th>\n",
       "      <th>JobSeekingStatus</th>\n",
       "      <th>HoursPerWeek</th>\n",
       "      <th>LastNewJob</th>\n",
       "      <th>AssessJobIndustry</th>\n",
       "      <th>AssessJobRole</th>\n",
       "      <th>AssessJobExp</th>\n",
       "      <th>AssessJobDept</th>\n",
       "      <th>AssessJobTech</th>\n",
       "      <th>AssessJobProjects</th>\n",
       "      <th>AssessJobCompensation</th>\n",
       "      <th>AssessJobOffice</th>\n",
       "      <th>AssessJobCommute</th>\n",
       "      <th>AssessJobRemote</th>\n",
       "      <th>AssessJobLeaders</th>\n",
       "      <th>AssessJobProfDevel</th>\n",
       "      <th>AssessJobDiversity</th>\n",
       "      <th>AssessJobProduct</th>\n",
       "      <th>AssessJobFinances</th>\n",
       "      <th>ImportantBenefits</th>\n",
       "      <th>ClickyKeys</th>\n",
       "      <th>JobProfile</th>\n",
       "      <th>ResumePrompted</th>\n",
       "      <th>LearnedHiring</th>\n",
       "      <th>ImportantHiringAlgorithms</th>\n",
       "      <th>ImportantHiringTechExp</th>\n",
       "      <th>ImportantHiringCommunication</th>\n",
       "      <th>ImportantHiringOpenSource</th>\n",
       "      <th>ImportantHiringPMExp</th>\n",
       "      <th>ImportantHiringCompanies</th>\n",
       "      <th>ImportantHiringTitles</th>\n",
       "      <th>ImportantHiringEducation</th>\n",
       "      <th>ImportantHiringRep</th>\n",
       "      <th>ImportantHiringGettingThingsDone</th>\n",
       "      <th>Currency</th>\n",
       "      <th>Overpaid</th>\n",
       "      <th>TabsSpaces</th>\n",
       "      <th>EducationImportant</th>\n",
       "      <th>EducationTypes</th>\n",
       "      <th>SelfTaughtTypes</th>\n",
       "      <th>TimeAfterBootcamp</th>\n",
       "      <th>CousinEducation</th>\n",
       "      <th>WorkStart</th>\n",
       "      <th>HaveWorkedLanguage</th>\n",
       "      <th>WantWorkLanguage</th>\n",
       "      <th>HaveWorkedFramework</th>\n",
       "      <th>WantWorkFramework</th>\n",
       "      <th>HaveWorkedDatabase</th>\n",
       "      <th>WantWorkDatabase</th>\n",
       "      <th>HaveWorkedPlatform</th>\n",
       "      <th>WantWorkPlatform</th>\n",
       "      <th>IDE</th>\n",
       "      <th>AuditoryEnvironment</th>\n",
       "      <th>Methodology</th>\n",
       "      <th>VersionControl</th>\n",
       "      <th>CheckInCode</th>\n",
       "      <th>ShipIt</th>\n",
       "      <th>OtherPeoplesCode</th>\n",
       "      <th>ProjectManagement</th>\n",
       "      <th>EnjoyDebugging</th>\n",
       "      <th>InTheZone</th>\n",
       "      <th>DifficultCommunication</th>\n",
       "      <th>CollaborateRemote</th>\n",
       "      <th>MetricAssess</th>\n",
       "      <th>EquipmentSatisfiedMonitors</th>\n",
       "      <th>EquipmentSatisfiedCPU</th>\n",
       "      <th>EquipmentSatisfiedRAM</th>\n",
       "      <th>EquipmentSatisfiedStorage</th>\n",
       "      <th>EquipmentSatisfiedRW</th>\n",
       "      <th>InfluenceInternet</th>\n",
       "      <th>InfluenceWorkstation</th>\n",
       "      <th>InfluenceHardware</th>\n",
       "      <th>InfluenceServers</th>\n",
       "      <th>InfluenceTechStack</th>\n",
       "      <th>InfluenceDeptTech</th>\n",
       "      <th>InfluenceVizTools</th>\n",
       "      <th>InfluenceDatabase</th>\n",
       "      <th>InfluenceCloud</th>\n",
       "      <th>InfluenceConsultants</th>\n",
       "      <th>InfluenceRecruitment</th>\n",
       "      <th>InfluenceCommunication</th>\n",
       "      <th>StackOverflowDescribes</th>\n",
       "      <th>StackOverflowSatisfaction</th>\n",
       "      <th>StackOverflowDevices</th>\n",
       "      <th>StackOverflowFoundAnswer</th>\n",
       "      <th>StackOverflowCopiedCode</th>\n",
       "      <th>StackOverflowJobListing</th>\n",
       "      <th>StackOverflowCompanyPage</th>\n",
       "      <th>StackOverflowJobSearch</th>\n",
       "      <th>StackOverflowNewQuestion</th>\n",
       "      <th>StackOverflowAnswer</th>\n",
       "      <th>StackOverflowMetaChat</th>\n",
       "      <th>StackOverflowAdsRelevant</th>\n",
       "      <th>StackOverflowAdsDistracting</th>\n",
       "      <th>StackOverflowModeration</th>\n",
       "      <th>StackOverflowCommunity</th>\n",
       "      <th>StackOverflowHelpful</th>\n",
       "      <th>StackOverflowBetter</th>\n",
       "      <th>StackOverflowWhatDo</th>\n",
       "      <th>StackOverflowMakeMoney</th>\n",
       "      <th>Gender</th>\n",
       "      <th>HighestEducationParents</th>\n",
       "      <th>Race</th>\n",
       "      <th>SurveyLong</th>\n",
       "      <th>QuestionsInteresting</th>\n",
       "      <th>QuestionsConfusing</th>\n",
       "      <th>InterestedAnswers</th>\n",
       "      <th>Salary</th>\n",
       "      <th>ExpectedSalary</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>1</td>\n",
       "      <td>Student</td>\n",
       "      <td>Yes, both</td>\n",
       "      <td>United States</td>\n",
       "      <td>No</td>\n",
       "      <td>Not employed, and not looking for work</td>\n",
       "      <td>Secondary school</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2 to 3 years</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>With a soft \"g,\" like \"jiff\"</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>I'm not actively looking, but I am open to new...</td>\n",
       "      <td>0.0</td>\n",
       "      <td>Not applicable/ never</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Stock options; Vacation/days off; Remote options</td>\n",
       "      <td>Yes</td>\n",
       "      <td>Other</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Not at all important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Tabs</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Online course; Open source contributions</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>6:00 AM</td>\n",
       "      <td>Swift</td>\n",
       "      <td>Swift</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>iOS</td>\n",
       "      <td>iOS</td>\n",
       "      <td>Atom; Xcode</td>\n",
       "      <td>Turn on some music</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Somewhat satisfied</td>\n",
       "      <td>Not very satisfied</td>\n",
       "      <td>Not at all satisfied</td>\n",
       "      <td>Very satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Not very satisfied</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>I have created a CV or Developer Story on Stac...</td>\n",
       "      <td>9.0</td>\n",
       "      <td>Desktop; iOS app</td>\n",
       "      <td>At least once each week</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Once or twice</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Several times</td>\n",
       "      <td>Several times</td>\n",
       "      <td>Once or twice</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Male</td>\n",
       "      <td>High school</td>\n",
       "      <td>White or of European descent</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>2</td>\n",
       "      <td>Student</td>\n",
       "      <td>Yes, both</td>\n",
       "      <td>United Kingdom</td>\n",
       "      <td>Yes, full-time</td>\n",
       "      <td>Employed part-time</td>\n",
       "      <td>Some college/university study without earning ...</td>\n",
       "      <td>Computer science or software engineering</td>\n",
       "      <td>More than half, but not all, the time</td>\n",
       "      <td>20 to 99 employees</td>\n",
       "      <td>Privately-held limited company, not in startup...</td>\n",
       "      <td>9 to 10 years</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>With a hard \"g,\" like \"gift\"</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>No</td>\n",
       "      <td>Other</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Some other way</td>\n",
       "      <td>Important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>British pounds sterling (£)</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Spaces</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Online course; Self-taught; Hackathon; Open so...</td>\n",
       "      <td>Official documentation; Stack Overflow Q&amp;A; Other</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>10:00 AM</td>\n",
       "      <td>JavaScript; Python; Ruby; SQL</td>\n",
       "      <td>Java; Python; Ruby; SQL</td>\n",
       "      <td>.NET Core</td>\n",
       "      <td>.NET Core</td>\n",
       "      <td>MySQL; SQLite</td>\n",
       "      <td>MySQL; SQLite</td>\n",
       "      <td>Amazon Web Services (AWS)</td>\n",
       "      <td>Linux Desktop; Raspberry Pi; Amazon Web Servic...</td>\n",
       "      <td>Atom; Notepad++; Vim; PyCharm; RubyMine; Visua...</td>\n",
       "      <td>Put on some ambient sounds (e.g. whale songs, ...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Git</td>\n",
       "      <td>Multiple times a day</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Customer satisfaction; On time/in budget; Peer...</td>\n",
       "      <td>Not very satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Somewhat satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>No influence at all</td>\n",
       "      <td>I have created a CV or Developer Story on Stac...</td>\n",
       "      <td>8.0</td>\n",
       "      <td>Desktop; iOS browser; iOS app; Android browser...</td>\n",
       "      <td>Several times</td>\n",
       "      <td>Several times</td>\n",
       "      <td>Once or twice</td>\n",
       "      <td>Once or twice</td>\n",
       "      <td>Once or twice</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Several times</td>\n",
       "      <td>At least once each week</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Male</td>\n",
       "      <td>A master's degree</td>\n",
       "      <td>White or of European descent</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>NaN</td>\n",
       "      <td>37500.0</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>3</td>\n",
       "      <td>Professional developer</td>\n",
       "      <td>Yes, both</td>\n",
       "      <td>United Kingdom</td>\n",
       "      <td>No</td>\n",
       "      <td>Employed full-time</td>\n",
       "      <td>Bachelor's degree</td>\n",
       "      <td>Computer science or software engineering</td>\n",
       "      <td>Less than half the time, but at least one day ...</td>\n",
       "      <td>10,000 or more employees</td>\n",
       "      <td>Publicly-traded corporation</td>\n",
       "      <td>20 or more years</td>\n",
       "      <td>20 or more years</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Other</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>8.0</td>\n",
       "      <td>9.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>With a hard \"g,\" like \"gift\"</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Yes</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>British pounds sterling (£)</td>\n",
       "      <td>Neither underpaid nor overpaid</td>\n",
       "      <td>Spaces</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Self-taught; Coding competition; Hackathon; Op...</td>\n",
       "      <td>Official documentation; Trade book; Textbook; ...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>9:00 AM</td>\n",
       "      <td>Java; PHP; Python</td>\n",
       "      <td>C; Python; Rust</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>MySQL</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Sublime Text; Vim; IntelliJ</td>\n",
       "      <td>Turn on some music</td>\n",
       "      <td>Agile; Lean; Scrum; Extreme; Pair; Kanban</td>\n",
       "      <td>Mercurial</td>\n",
       "      <td>Multiple times a day</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Customer satisfaction; Benchmarked product per...</td>\n",
       "      <td>Very satisfied</td>\n",
       "      <td>Somewhat satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Somewhat satisfied</td>\n",
       "      <td>Very satisfied</td>\n",
       "      <td>A lot of influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>A lot of influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>Some influence</td>\n",
       "      <td>I have created a CV or Developer Story on Stac...</td>\n",
       "      <td>8.0</td>\n",
       "      <td>Desktop; iOS browser; iOS app</td>\n",
       "      <td>Once or twice</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>Haven't done at all</td>\n",
       "      <td>At least once each day</td>\n",
       "      <td>At least once each day</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Male</td>\n",
       "      <td>A professional degree</td>\n",
       "      <td>White or of European descent</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>113750.0</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>4</td>\n",
       "      <td>Professional non-developer who sometimes write...</td>\n",
       "      <td>Yes, both</td>\n",
       "      <td>United States</td>\n",
       "      <td>No</td>\n",
       "      <td>Employed full-time</td>\n",
       "      <td>Doctoral degree</td>\n",
       "      <td>A non-computer-focused engineering discipline</td>\n",
       "      <td>Less than half the time, but at least one day ...</td>\n",
       "      <td>10,000 or more employees</td>\n",
       "      <td>Non-profit/non-governmental organization or pr...</td>\n",
       "      <td>14 to 15 years</td>\n",
       "      <td>9 to 10 years</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Data scientist</td>\n",
       "      <td>6.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>With a soft \"g,\" like \"jiff\"</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>I am actively looking for a job</td>\n",
       "      <td>5.0</td>\n",
       "      <td>Between 2 and 4 years ago</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Stock options; Annual bonus; Health benefits; ...</td>\n",
       "      <td>Yes</td>\n",
       "      <td>LinkedIn; Other</td>\n",
       "      <td>NaN</td>\n",
       "      <td>A friend, family member, or former colleague t...</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Somewhat important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Not very important</td>\n",
       "      <td>Important</td>\n",
       "      <td>Very important</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Spaces</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>9:00 AM</td>\n",
       "      <td>Matlab; Python; R; SQL</td>\n",
       "      <td>Matlab; Python; R; SQL</td>\n",
       "      <td>React</td>\n",
       "      <td>Hadoop; Node.js; React</td>\n",
       "      <td>MongoDB; Redis; SQL Server; MySQL; SQLite</td>\n",
       "      <td>MongoDB; Redis; SQL Server; MySQL; SQLite</td>\n",
       "      <td>Windows Desktop; Linux Desktop; Mac OS; Amazon...</td>\n",
       "      <td>Windows Desktop; Linux Desktop; Mac OS; Amazon...</td>\n",
       "      <td>Notepad++; Sublime Text; TextMate; Vim; IPytho...</td>\n",
       "      <td>Turn on some music</td>\n",
       "      <td>Agile</td>\n",
       "      <td>Git</td>\n",
       "      <td>Multiple times a day</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>I have created a CV or Developer Story on Stac...</td>\n",
       "      <td>10.0</td>\n",
       "      <td>Desktop; iOS browser; iOS app</td>\n",
       "      <td>At least once each week</td>\n",
       "      <td>Several times</td>\n",
       "      <td>At least once each week</td>\n",
       "      <td>Several times</td>\n",
       "      <td>At least once each week</td>\n",
       "      <td>Several times</td>\n",
       "      <td>At least once each day</td>\n",
       "      <td>At least once each day</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly disagree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>Disagree</td>\n",
       "      <td>Male</td>\n",
       "      <td>A doctoral degree</td>\n",
       "      <td>White or of European descent</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Agree</td>\n",
       "      <td>Somewhat agree</td>\n",
       "      <td>Strongly agree</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>5</td>\n",
       "      <td>Professional developer</td>\n",
       "      <td>Yes, I program as a hobby</td>\n",
       "      <td>Switzerland</td>\n",
       "      <td>No</td>\n",
       "      <td>Employed full-time</td>\n",
       "      <td>Master's degree</td>\n",
       "      <td>Computer science or software engineering</td>\n",
       "      <td>Never</td>\n",
       "      <td>10 to 19 employees</td>\n",
       "      <td>Privately-held limited company, not in startup...</td>\n",
       "      <td>20 or more years</td>\n",
       "      <td>10 to 11 years</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Mobile developer; Graphics programming; Deskto...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>6.0</td>\n",
       "      <td>8.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>With a soft \"g,\" like \"jiff\"</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>Satisfied</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "   Respondent                                       Professional  \\\n",
       "0           1                                            Student   \n",
       "1           2                                            Student   \n",
       "2           3                             Professional developer   \n",
       "3           4  Professional non-developer who sometimes write...   \n",
       "4           5                             Professional developer   \n",
       "\n",
       "                ProgramHobby         Country      University  \\\n",
       "0                  Yes, both   United States              No   \n",
       "1                  Yes, both  United Kingdom  Yes, full-time   \n",
       "2                  Yes, both  United Kingdom              No   \n",
       "3                  Yes, both   United States              No   \n",
       "4  Yes, I program as a hobby     Switzerland              No   \n",
       "\n",
       "                         EmploymentStatus  \\\n",
       "0  Not employed, and not looking for work   \n",
       "1                      Employed part-time   \n",
       "2                      Employed full-time   \n",
       "3                      Employed full-time   \n",
       "4                      Employed full-time   \n",
       "\n",
       "                                     FormalEducation  \\\n",
       "0                                   Secondary school   \n",
       "1  Some college/university study without earning ...   \n",
       "2                                  Bachelor's degree   \n",
       "3                                    Doctoral degree   \n",
       "4                                    Master's degree   \n",
       "\n",
       "                                  MajorUndergrad  \\\n",
       "0                                            NaN   \n",
       "1       Computer science or software engineering   \n",
       "2       Computer science or software engineering   \n",
       "3  A non-computer-focused engineering discipline   \n",
       "4       Computer science or software engineering   \n",
       "\n",
       "                                          HomeRemote  \\\n",
       "0                                                NaN   \n",
       "1              More than half, but not all, the time   \n",
       "2  Less than half the time, but at least one day ...   \n",
       "3  Less than half the time, but at least one day ...   \n",
       "4                                              Never   \n",
       "\n",
       "                CompanySize  \\\n",
       "0                       NaN   \n",
       "1        20 to 99 employees   \n",
       "2  10,000 or more employees   \n",
       "3  10,000 or more employees   \n",
       "4        10 to 19 employees   \n",
       "\n",
       "                                         CompanyType      YearsProgram  \\\n",
       "0                                                NaN      2 to 3 years   \n",
       "1  Privately-held limited company, not in startup...     9 to 10 years   \n",
       "2                        Publicly-traded corporation  20 or more years   \n",
       "3  Non-profit/non-governmental organization or pr...    14 to 15 years   \n",
       "4  Privately-held limited company, not in startup...  20 or more years   \n",
       "\n",
       "      YearsCodedJob YearsCodedJobPast  \\\n",
       "0               NaN               NaN   \n",
       "1               NaN               NaN   \n",
       "2  20 or more years               NaN   \n",
       "3     9 to 10 years               NaN   \n",
       "4    10 to 11 years               NaN   \n",
       "\n",
       "                                       DeveloperType WebDeveloperType  \\\n",
       "0                                                NaN              NaN   \n",
       "1                                                NaN              NaN   \n",
       "2                                              Other              NaN   \n",
       "3                                                NaN              NaN   \n",
       "4  Mobile developer; Graphics programming; Deskto...              NaN   \n",
       "\n",
       "  MobileDeveloperType NonDeveloperType  CareerSatisfaction  JobSatisfaction  \\\n",
       "0                 NaN              NaN                 NaN              NaN   \n",
       "1                 NaN              NaN                 NaN              NaN   \n",
       "2                 NaN              NaN                 8.0              9.0   \n",
       "3                 NaN   Data scientist                 6.0              3.0   \n",
       "4                 NaN              NaN                 6.0              8.0   \n",
       "\n",
       "  ExCoderReturn ExCoderNotForMe ExCoderBalance ExCoder10Years ExCoderBelonged  \\\n",
       "0           NaN             NaN            NaN            NaN             NaN   \n",
       "1           NaN             NaN            NaN            NaN             NaN   \n",
       "2           NaN             NaN            NaN            NaN             NaN   \n",
       "3           NaN             NaN            NaN            NaN             NaN   \n",
       "4           NaN             NaN            NaN            NaN             NaN   \n",
       "\n",
       "  ExCoderSkills ExCoderWillNotCode ExCoderActive  \\\n",
       "0           NaN                NaN           NaN   \n",
       "1           NaN                NaN           NaN   \n",
       "2           NaN                NaN           NaN   \n",
       "3           NaN                NaN           NaN   \n",
       "4           NaN                NaN           NaN   \n",
       "\n",
       "                   PronounceGIF  ProblemSolving  BuildingThings  \\\n",
       "0  With a soft \"g,\" like \"jiff\"  Strongly agree  Strongly agree   \n",
       "1  With a hard \"g,\" like \"gift\"             NaN             NaN   \n",
       "2  With a hard \"g,\" like \"gift\"  Strongly agree  Strongly agree   \n",
       "3  With a soft \"g,\" like \"jiff\"  Strongly agree  Strongly agree   \n",
       "4  With a soft \"g,\" like \"jiff\"             NaN             NaN   \n",
       "\n",
       "  LearningNewTech   BoringDetails     JobSecurity DiversityImportant  \\\n",
       "0           Agree        Disagree  Strongly agree              Agree   \n",
       "1             NaN             NaN             NaN                NaN   \n",
       "2  Strongly agree  Somewhat agree           Agree     Strongly agree   \n",
       "3  Strongly agree        Disagree  Somewhat agree              Agree   \n",
       "4             NaN             NaN             NaN                NaN   \n",
       "\n",
       "  AnnoyingUI FriendsDevelopers   RightWrongWay UnderstandComputers  \\\n",
       "0      Agree          Disagree  Somewhat agree            Disagree   \n",
       "1        NaN               NaN             NaN                 NaN   \n",
       "2      Agree    Somewhat agree        Disagree            Disagree   \n",
       "3      Agree             Agree  Somewhat agree   Strongly disagree   \n",
       "4        NaN               NaN             NaN                 NaN   \n",
       "\n",
       "      SeriousWork InvestTimeTools        WorkPayCare KinshipDevelopers  \\\n",
       "0  Strongly agree  Strongly agree  Strongly disagree             Agree   \n",
       "1             NaN             NaN                NaN               NaN   \n",
       "2           Agree  Somewhat agree           Disagree    Somewhat agree   \n",
       "3  Strongly agree           Agree           Disagree    Strongly agree   \n",
       "4             NaN             NaN                NaN               NaN   \n",
       "\n",
       "  ChallengeMyself    CompetePeers ChangeWorld  \\\n",
       "0           Agree        Disagree       Agree   \n",
       "1             NaN             NaN         NaN   \n",
       "2           Agree        Disagree       Agree   \n",
       "3  Strongly agree  Somewhat agree       Agree   \n",
       "4             NaN             NaN         NaN   \n",
       "\n",
       "                                    JobSeekingStatus  HoursPerWeek  \\\n",
       "0  I'm not actively looking, but I am open to new...           0.0   \n",
       "1                                                NaN           NaN   \n",
       "2                                                NaN           NaN   \n",
       "3                    I am actively looking for a job           5.0   \n",
       "4                                                NaN           NaN   \n",
       "\n",
       "                  LastNewJob   AssessJobIndustry       AssessJobRole  \\\n",
       "0      Not applicable/ never      Very important      Very important   \n",
       "1                        NaN                 NaN                 NaN   \n",
       "2                        NaN                 NaN                 NaN   \n",
       "3  Between 2 and 4 years ago  Somewhat important  Somewhat important   \n",
       "4                        NaN                 NaN                 NaN   \n",
       "\n",
       "         AssessJobExp   AssessJobDept   AssessJobTech AssessJobProjects  \\\n",
       "0           Important  Very important  Very important    Very important   \n",
       "1                 NaN             NaN             NaN               NaN   \n",
       "2                 NaN             NaN             NaN               NaN   \n",
       "3  Somewhat important       Important       Important    Very important   \n",
       "4                 NaN             NaN             NaN               NaN   \n",
       "\n",
       "  AssessJobCompensation AssessJobOffice AssessJobCommute     AssessJobRemote  \\\n",
       "0             Important  Very important   Very important      Very important   \n",
       "1                   NaN             NaN              NaN                 NaN   \n",
       "2                   NaN             NaN              NaN                 NaN   \n",
       "3             Important  Very important        Important  Somewhat important   \n",
       "4                   NaN             NaN              NaN                 NaN   \n",
       "\n",
       "     AssessJobLeaders AssessJobProfDevel  AssessJobDiversity  \\\n",
       "0      Very important     Very important  Somewhat important   \n",
       "1                 NaN                NaN                 NaN   \n",
       "2                 NaN                NaN                 NaN   \n",
       "3  Not very important     Very important           Important   \n",
       "4                 NaN                NaN                 NaN   \n",
       "\n",
       "     AssessJobProduct   AssessJobFinances  \\\n",
       "0  Not very important  Somewhat important   \n",
       "1                 NaN                 NaN   \n",
       "2                 NaN                 NaN   \n",
       "3      Very important      Very important   \n",
       "4                 NaN                 NaN   \n",
       "\n",
       "                                   ImportantBenefits ClickyKeys  \\\n",
       "0   Stock options; Vacation/days off; Remote options        Yes   \n",
       "1                                                NaN         No   \n",
       "2                                                NaN        Yes   \n",
       "3  Stock options; Annual bonus; Health benefits; ...        Yes   \n",
       "4                                                NaN        NaN   \n",
       "\n",
       "        JobProfile ResumePrompted  \\\n",
       "0            Other            NaN   \n",
       "1            Other            NaN   \n",
       "2              NaN            NaN   \n",
       "3  LinkedIn; Other            NaN   \n",
       "4              NaN            NaN   \n",
       "\n",
       "                                       LearnedHiring  \\\n",
       "0                                                NaN   \n",
       "1                                     Some other way   \n",
       "2                                                NaN   \n",
       "3  A friend, family member, or former colleague t...   \n",
       "4                                                NaN   \n",
       "\n",
       "  ImportantHiringAlgorithms ImportantHiringTechExp  \\\n",
       "0                 Important              Important   \n",
       "1                 Important              Important   \n",
       "2                       NaN                    NaN   \n",
       "3        Somewhat important     Somewhat important   \n",
       "4                       NaN                    NaN   \n",
       "\n",
       "  ImportantHiringCommunication ImportantHiringOpenSource ImportantHiringPMExp  \\\n",
       "0                    Important        Somewhat important            Important   \n",
       "1                    Important                 Important   Somewhat important   \n",
       "2                          NaN                       NaN                  NaN   \n",
       "3               Very important            Very important   Somewhat important   \n",
       "4                          NaN                       NaN                  NaN   \n",
       "\n",
       "  ImportantHiringCompanies ImportantHiringTitles ImportantHiringEducation  \\\n",
       "0       Not very important    Not very important     Not at all important   \n",
       "1       Somewhat important    Not very important       Somewhat important   \n",
       "2                      NaN                   NaN                      NaN   \n",
       "3       Somewhat important    Not very important       Not very important   \n",
       "4                      NaN                   NaN                      NaN   \n",
       "\n",
       "   ImportantHiringRep ImportantHiringGettingThingsDone  \\\n",
       "0  Somewhat important                   Very important   \n",
       "1  Not very important                   Very important   \n",
       "2                 NaN                              NaN   \n",
       "3           Important                   Very important   \n",
       "4                 NaN                              NaN   \n",
       "\n",
       "                      Currency                        Overpaid TabsSpaces  \\\n",
       "0                          NaN                             NaN       Tabs   \n",
       "1  British pounds sterling (£)                             NaN     Spaces   \n",
       "2  British pounds sterling (£)  Neither underpaid nor overpaid     Spaces   \n",
       "3                          NaN                             NaN     Spaces   \n",
       "4                          NaN                             NaN        NaN   \n",
       "\n",
       "   EducationImportant                                     EducationTypes  \\\n",
       "0                 NaN           Online course; Open source contributions   \n",
       "1                 NaN  Online course; Self-taught; Hackathon; Open so...   \n",
       "2  Not very important  Self-taught; Coding competition; Hackathon; Op...   \n",
       "3                 NaN                                                NaN   \n",
       "4                 NaN                                                NaN   \n",
       "\n",
       "                                     SelfTaughtTypes TimeAfterBootcamp  \\\n",
       "0                                                NaN               NaN   \n",
       "1  Official documentation; Stack Overflow Q&A; Other               NaN   \n",
       "2  Official documentation; Trade book; Textbook; ...               NaN   \n",
       "3                                                NaN               NaN   \n",
       "4                                                NaN               NaN   \n",
       "\n",
       "  CousinEducation WorkStart             HaveWorkedLanguage  \\\n",
       "0             NaN   6:00 AM                          Swift   \n",
       "1             NaN  10:00 AM  JavaScript; Python; Ruby; SQL   \n",
       "2             NaN   9:00 AM              Java; PHP; Python   \n",
       "3             NaN   9:00 AM         Matlab; Python; R; SQL   \n",
       "4             NaN       NaN                            NaN   \n",
       "\n",
       "          WantWorkLanguage HaveWorkedFramework       WantWorkFramework  \\\n",
       "0                    Swift                 NaN                     NaN   \n",
       "1  Java; Python; Ruby; SQL           .NET Core               .NET Core   \n",
       "2          C; Python; Rust                 NaN                     NaN   \n",
       "3   Matlab; Python; R; SQL               React  Hadoop; Node.js; React   \n",
       "4                      NaN                 NaN                     NaN   \n",
       "\n",
       "                          HaveWorkedDatabase  \\\n",
       "0                                        NaN   \n",
       "1                              MySQL; SQLite   \n",
       "2                                      MySQL   \n",
       "3  MongoDB; Redis; SQL Server; MySQL; SQLite   \n",
       "4                                        NaN   \n",
       "\n",
       "                            WantWorkDatabase  \\\n",
       "0                                        NaN   \n",
       "1                              MySQL; SQLite   \n",
       "2                                        NaN   \n",
       "3  MongoDB; Redis; SQL Server; MySQL; SQLite   \n",
       "4                                        NaN   \n",
       "\n",
       "                                  HaveWorkedPlatform  \\\n",
       "0                                                iOS   \n",
       "1                          Amazon Web Services (AWS)   \n",
       "2                                                NaN   \n",
       "3  Windows Desktop; Linux Desktop; Mac OS; Amazon...   \n",
       "4                                                NaN   \n",
       "\n",
       "                                    WantWorkPlatform  \\\n",
       "0                                                iOS   \n",
       "1  Linux Desktop; Raspberry Pi; Amazon Web Servic...   \n",
       "2                                                NaN   \n",
       "3  Windows Desktop; Linux Desktop; Mac OS; Amazon...   \n",
       "4                                                NaN   \n",
       "\n",
       "                                                 IDE  \\\n",
       "0                                        Atom; Xcode   \n",
       "1  Atom; Notepad++; Vim; PyCharm; RubyMine; Visua...   \n",
       "2                        Sublime Text; Vim; IntelliJ   \n",
       "3  Notepad++; Sublime Text; TextMate; Vim; IPytho...   \n",
       "4                                                NaN   \n",
       "\n",
       "                                 AuditoryEnvironment  \\\n",
       "0                                 Turn on some music   \n",
       "1  Put on some ambient sounds (e.g. whale songs, ...   \n",
       "2                                 Turn on some music   \n",
       "3                                 Turn on some music   \n",
       "4                                                NaN   \n",
       "\n",
       "                                 Methodology VersionControl  \\\n",
       "0                                        NaN            NaN   \n",
       "1                                        NaN            Git   \n",
       "2  Agile; Lean; Scrum; Extreme; Pair; Kanban      Mercurial   \n",
       "3                                      Agile            Git   \n",
       "4                                        NaN            NaN   \n",
       "\n",
       "            CheckInCode          ShipIt OtherPeoplesCode  ProjectManagement  \\\n",
       "0                   NaN             NaN              NaN                NaN   \n",
       "1  Multiple times a day           Agree         Disagree  Strongly disagree   \n",
       "2  Multiple times a day           Agree         Disagree           Disagree   \n",
       "3  Multiple times a day  Somewhat agree            Agree     Somewhat agree   \n",
       "4                   NaN             NaN              NaN                NaN   \n",
       "\n",
       "   EnjoyDebugging       InTheZone DifficultCommunication  CollaborateRemote  \\\n",
       "0             NaN             NaN                    NaN                NaN   \n",
       "1           Agree  Somewhat agree               Disagree  Strongly disagree   \n",
       "2           Agree           Agree               Disagree     Somewhat agree   \n",
       "3  Somewhat agree  Strongly agree               Disagree     Somewhat agree   \n",
       "4             NaN             NaN                    NaN                NaN   \n",
       "\n",
       "                                        MetricAssess  \\\n",
       "0                                                NaN   \n",
       "1  Customer satisfaction; On time/in budget; Peer...   \n",
       "2  Customer satisfaction; Benchmarked product per...   \n",
       "3                                                NaN   \n",
       "4                                                NaN   \n",
       "\n",
       "  EquipmentSatisfiedMonitors EquipmentSatisfiedCPU EquipmentSatisfiedRAM  \\\n",
       "0         Somewhat satisfied    Not very satisfied  Not at all satisfied   \n",
       "1         Not very satisfied             Satisfied             Satisfied   \n",
       "2             Very satisfied    Somewhat satisfied             Satisfied   \n",
       "3                        NaN                   NaN                   NaN   \n",
       "4                  Satisfied             Satisfied             Satisfied   \n",
       "\n",
       "  EquipmentSatisfiedStorage EquipmentSatisfiedRW   InfluenceInternet  \\\n",
       "0            Very satisfied            Satisfied  Not very satisfied   \n",
       "1                 Satisfied   Somewhat satisfied           Satisfied   \n",
       "2                 Satisfied   Somewhat satisfied      Very satisfied   \n",
       "3                       NaN                  NaN                 NaN   \n",
       "4                 Satisfied            Satisfied           Satisfied   \n",
       "\n",
       "  InfluenceWorkstation    InfluenceHardware     InfluenceServers  \\\n",
       "0                  NaN                  NaN                  NaN   \n",
       "1  No influence at all  No influence at all  No influence at all   \n",
       "2   A lot of influence       Some influence       Some influence   \n",
       "3                  NaN                  NaN                  NaN   \n",
       "4                  NaN                  NaN                  NaN   \n",
       "\n",
       "    InfluenceTechStack    InfluenceDeptTech    InfluenceVizTools  \\\n",
       "0                  NaN                  NaN                  NaN   \n",
       "1  No influence at all  No influence at all  No influence at all   \n",
       "2       Some influence   A lot of influence       Some influence   \n",
       "3                  NaN                  NaN                  NaN   \n",
       "4                  NaN                  NaN                  NaN   \n",
       "\n",
       "     InfluenceDatabase       InfluenceCloud InfluenceConsultants  \\\n",
       "0                  NaN                  NaN                  NaN   \n",
       "1  No influence at all  No influence at all  No influence at all   \n",
       "2       Some influence       Some influence       Some influence   \n",
       "3                  NaN                  NaN                  NaN   \n",
       "4                  NaN                  NaN                  NaN   \n",
       "\n",
       "  InfluenceRecruitment InfluenceCommunication  \\\n",
       "0                  NaN                    NaN   \n",
       "1  No influence at all    No influence at all   \n",
       "2       Some influence         Some influence   \n",
       "3                  NaN                    NaN   \n",
       "4                  NaN                    NaN   \n",
       "\n",
       "                              StackOverflowDescribes  \\\n",
       "0  I have created a CV or Developer Story on Stac...   \n",
       "1  I have created a CV or Developer Story on Stac...   \n",
       "2  I have created a CV or Developer Story on Stac...   \n",
       "3  I have created a CV or Developer Story on Stac...   \n",
       "4                                                NaN   \n",
       "\n",
       "   StackOverflowSatisfaction  \\\n",
       "0                        9.0   \n",
       "1                        8.0   \n",
       "2                        8.0   \n",
       "3                       10.0   \n",
       "4                        NaN   \n",
       "\n",
       "                                StackOverflowDevices StackOverflowFoundAnswer  \\\n",
       "0                                   Desktop; iOS app  At least once each week   \n",
       "1  Desktop; iOS browser; iOS app; Android browser...            Several times   \n",
       "2                      Desktop; iOS browser; iOS app            Once or twice   \n",
       "3                      Desktop; iOS browser; iOS app  At least once each week   \n",
       "4                                                NaN                      NaN   \n",
       "\n",
       "  StackOverflowCopiedCode  StackOverflowJobListing StackOverflowCompanyPage  \\\n",
       "0     Haven't done at all            Once or twice      Haven't done at all   \n",
       "1           Several times            Once or twice            Once or twice   \n",
       "2     Haven't done at all      Haven't done at all      Haven't done at all   \n",
       "3           Several times  At least once each week            Several times   \n",
       "4                     NaN                      NaN                      NaN   \n",
       "\n",
       "    StackOverflowJobSearch StackOverflowNewQuestion     StackOverflowAnswer  \\\n",
       "0      Haven't done at all            Several times           Several times   \n",
       "1            Once or twice      Haven't done at all           Several times   \n",
       "2      Haven't done at all      Haven't done at all  At least once each day   \n",
       "3  At least once each week            Several times  At least once each day   \n",
       "4                      NaN                      NaN                     NaN   \n",
       "\n",
       "     StackOverflowMetaChat StackOverflowAdsRelevant  \\\n",
       "0            Once or twice           Somewhat agree   \n",
       "1  At least once each week                 Disagree   \n",
       "2   At least once each day                 Disagree   \n",
       "3   At least once each day                    Agree   \n",
       "4                      NaN                      NaN   \n",
       "\n",
       "  StackOverflowAdsDistracting StackOverflowModeration StackOverflowCommunity  \\\n",
       "0           Strongly disagree       Strongly disagree         Strongly agree   \n",
       "1           Strongly disagree       Strongly disagree         Strongly agree   \n",
       "2                    Disagree       Strongly disagree         Strongly agree   \n",
       "3           Strongly disagree       Strongly disagree         Strongly agree   \n",
       "4                         NaN                     NaN                    NaN   \n",
       "\n",
       "  StackOverflowHelpful StackOverflowBetter StackOverflowWhatDo  \\\n",
       "0                Agree      Strongly agree      Strongly agree   \n",
       "1                Agree      Strongly agree      Strongly agree   \n",
       "2                Agree               Agree               Agree   \n",
       "3       Strongly agree               Agree      Strongly agree   \n",
       "4                  NaN                 NaN                 NaN   \n",
       "\n",
       "  StackOverflowMakeMoney Gender HighestEducationParents  \\\n",
       "0      Strongly disagree   Male             High school   \n",
       "1      Strongly disagree   Male       A master's degree   \n",
       "2               Disagree   Male   A professional degree   \n",
       "3               Disagree   Male       A doctoral degree   \n",
       "4                    NaN    NaN                     NaN   \n",
       "\n",
       "                           Race         SurveyLong QuestionsInteresting  \\\n",
       "0  White or of European descent  Strongly disagree       Strongly agree   \n",
       "1  White or of European descent     Somewhat agree       Somewhat agree   \n",
       "2  White or of European descent     Somewhat agree                Agree   \n",
       "3  White or of European descent              Agree                Agree   \n",
       "4                           NaN                NaN                  NaN   \n",
       "\n",
       "  QuestionsConfusing InterestedAnswers    Salary  ExpectedSalary  \n",
       "0           Disagree    Strongly agree       NaN             NaN  \n",
       "1           Disagree    Strongly agree       NaN         37500.0  \n",
       "2           Disagree             Agree  113750.0             NaN  \n",
       "3     Somewhat agree    Strongly agree       NaN             NaN  \n",
       "4                NaN               NaN       NaN             NaN  "
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# verificar as primeiras entradas do DataFrame\n",
    "df.head()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Histograma\n",
    "\n",
    "Resumidamente, um histograma é um gráfico de distribuição de frequência, e que permite analisar visualmente como uma amostra/população está distribuída.\n",
    "\n",
    "Como nosso cérebro humano tem dificuldade de processar grandes volumes de dadoss, uma das melhores abordagens quando você pega um dataset qualquer é plotar a distribuição das variáveis numéricas a fim de criar um conhecimento inicial.\n",
    "\n",
    "Sem saber nada sobre a variável 'Salary', veja como só olhar o histograma facilita o trabalho."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "image/png": 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\n",
      "text/plain": [
       "<Figure size 432x288 with 1 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "# plotar o histograma do Salário dos desenvolvedores\n",
    "df['Salary'].hist();"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Como você viu aí em cima, para plotar o histograma de qualquer variável basta selecionar ela dentro do DataFrame e chamar o método `hist()` e ver seu gráfico aparecer na tela.\n",
    "\n",
    "Só olhando o gráfico acima ja podemos inferir que há uma maior frequência de salário na faixa dos $50 mil dólares entre todos os desenvolvedores que responderam ao questionário.\n",
    "\n",
    "Também vemos que o gráfico não é simétrico, pois a maior parte dos desenvolvedores tem seus salários concentrados na esquerda do gráfico. Isso significa que um desenvolvedor médio pode esperar seu salário entre 25 mil e 60 mil dólares aproximadamente.\n",
    "\n",
    "Também é fácil ver que muitos poucos desenvolvedores tem salários acima de 100 mil Trumps."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.7.3"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}