{"id":4210,"date":"2023-07-12T20:09:14","date_gmt":"2023-07-12T20:09:14","guid":{"rendered":"https:\/\/statorials.org\/pt\/quartis-panda\/"},"modified":"2023-07-12T20:09:14","modified_gmt":"2023-07-12T20:09:14","slug":"quartis-panda","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/quartis-panda\/","title":{"rendered":"Como calcular quartis em pandas (com exemplo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Nas estat\u00edsticas, <strong>os quartis<\/strong> s\u00e3o valores que dividem um conjunto de dados em quatro partes iguais.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ao analisar uma distribui\u00e7\u00e3o, geralmente estamos interessados nos seguintes quartis:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Primeiro quartil ( <strong>Q1<\/strong> ): O valor localizado no 25\u00ba percentil<\/span><\/li>\n<li> <span style=\"color: #000000;\">Segundo quartil ( <strong>Q2<\/strong> ): O valor localizado no 50\u00ba percentil<\/span><\/li>\n<li> <span style=\"color: #000000;\">Terceiro quartil ( <strong>Q3<\/strong> ): O valor localizado no 75\u00ba percentil<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Voc\u00ea pode usar os seguintes m\u00e9todos para calcular quartis de colunas em um DataFrame do pandas:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 1: calcular quartis para uma coluna<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong>df[' <span style=\"color: #ff0000;\">some_column<\/span> ']. <span style=\"color: #3366ff;\">quantile<\/span> ([ <span style=\"color: #008000;\">0.25<\/span> , <span style=\"color: #008000;\">0.5<\/span> , <span style=\"color: #008000;\">0.75<\/span> ])\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 2: calcular quartis para cada coluna num\u00e9rica<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><b>df. <span style=\"color: #3366ff;\">quantile<\/span> (q=[ <span style=\"color: #008000;\">0.25<\/span> , <span style=\"color: #008000;\">0.5<\/span> , <span style=\"color: #008000;\">0.75<\/span> ], axis= <span style=\"color: #008000;\">0<\/span> , numeric_only= <span style=\"color: #008000;\">True<\/span> )\n<\/b><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar cada m\u00e9todo na pr\u00e1tica com o seguinte DataFrame do pandas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><b><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame\n<\/span>df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">team<\/span> ': ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'],\n                   ' <span style=\"color: #ff0000;\">points<\/span> ': [12, 14, 14, 16, 24, 26, 28, 30, 31, 35],\n                   ' <span style=\"color: #ff0000;\">assists<\/span> ': [2, 2, 3, 3, 4, 6, 7, 8, 10, 15]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n  team points assists\n0 to 12 2\n1 B 14 2\n2 C 14 3\n3 D 16 3\n4 E 24 4\n5 F 26 6\n6 G 28 7\n7:30 8\n8 I 31 10\n9 D 35 15<\/b><\/span><\/pre>\n<h2> <strong><span style=\"color: #000000;\">Exemplo 1: Calcular quartis para uma coluna<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular quartis apenas para a coluna <strong>de pontos<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#calculate quartiles for points column\n<\/span>df[' <span style=\"color: #ff0000;\">points<\/span> ']. <span style=\"color: #3366ff;\">quantile<\/span> ([ <span style=\"color: #008000;\">0.25<\/span> , <span style=\"color: #008000;\">0.5<\/span> , <span style=\"color: #008000;\">0.75<\/span> ])\n\n0.25 14.5\n0.50 25.0\n0.75 29.5\nName: points, dtype: float64<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Pelo resultado podemos ver:<\/span><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><span style=\"color: #000000;\">O primeiro quartil \u00e9 <strong>14,5<\/strong> .<\/span><\/span><\/li>\n<li> <span style=\"color: #000000;\">O segundo quartil \u00e9 <strong>25<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">O terceiro quartil \u00e9 <strong>29,5<\/strong> .<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Conhecendo apenas esses tr\u00eas valores, temos uma boa ideia de como os valores est\u00e3o distribu\u00eddos na coluna <strong>de pontos<\/strong> .<\/span><\/p>\n<h2> <strong><span style=\"color: #000000;\">Exemplo 2: Calcular quartis para cada coluna num\u00e9rica<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular quartis para cada coluna num\u00e9rica no DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#calculate quartiles for each numeric column in DataFrame\n<\/span>df. <span style=\"color: #3366ff;\">quantile<\/span> (q=[ <span style=\"color: #008000;\">0.25<\/span> , <span style=\"color: #008000;\">0.5<\/span> , <span style=\"color: #008000;\">0.75<\/span> ], axis= <span style=\"color: #008000;\">0<\/span> , numeric_only= <span style=\"color: #008000;\">True<\/span> )\n\n      assist points\n0.25 14.5 3.00\n0.50 25.0 5.00\n0.75 29.5 7.75<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">A sa\u00edda exibe os quartis das duas colunas num\u00e9ricas do DataFrame.<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Observe que existem v\u00e1rias maneiras de calcular quartis de uma distribui\u00e7\u00e3o.<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\">Consulte a <a href=\"https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.DataFrame.quantile.html\" target=\"_blank\" rel=\"noopener\">p\u00e1gina de documenta\u00e7\u00e3o<\/a> do pandas para ver os diferentes m\u00e9todos que a fun\u00e7\u00e3o pandas <strong>quantile()<\/strong> usa para calcular quartis.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como realizar outras tarefas comuns em pandas:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/mudanca-percentual-em-pandas\/\" target=\"_blank\" rel=\"noopener\">Como calcular a varia\u00e7\u00e3o percentual em pandas<\/a><br \/><a href=\"https:\/\/statorials.org\/pt\/porcentagem-acumulada-de-pandas\/\" target=\"_blank\" rel=\"noopener\">Como calcular a porcentagem cumulativa em pandas<\/a><br \/><a href=\"https:\/\/statorials.org\/pt\/grupo-de-pandas-por-porcentagem\/\" target=\"_blank\" rel=\"noopener\">Como calcular a porcentagem do total dentro de um grupo em pandas<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nas estat\u00edsticas, os quartis s\u00e3o valores que dividem um conjunto de dados em quatro partes iguais. Ao analisar uma distribui\u00e7\u00e3o, geralmente estamos interessados nos seguintes quartis: Primeiro quartil ( Q1 ): O valor localizado no 25\u00ba percentil Segundo quartil ( Q2 ): O valor localizado no 50\u00ba percentil Terceiro quartil ( Q3 ): O valor [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-4210","post","type-post","status-publish","format-standard","hentry","category-guia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Como calcular quartis em pandas (com exemplo) - Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como calcular quartis em um DataFrame do pandas, com um exemplo.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pt\/quartis-panda\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como calcular quartis em pandas (com exemplo) - Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como calcular quartis em um DataFrame do pandas, com um exemplo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/quartis-panda\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-12T20:09:14+00:00\" \/>\n<meta name=\"author\" content=\"Dr. benjamim anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr. benjamim anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/quartis-panda\/\",\"url\":\"https:\/\/statorials.org\/pt\/quartis-panda\/\",\"name\":\"Como calcular quartis em pandas (com exemplo) - Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-12T20:09:14+00:00\",\"dateModified\":\"2023-07-12T20:09:14+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como calcular quartis em um DataFrame do pandas, com um exemplo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/quartis-panda\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/quartis-panda\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/quartis-panda\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como calcular quartis em pandas (com exemplo)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pt\/#website\",\"url\":\"https:\/\/statorials.org\/pt\/\",\"name\":\"Statorials\",\"description\":\"O seu guia para a literacia estat\u00edstica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pt\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\",\"name\":\"Dr. benjamim anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr. benjamim anderson\"},\"description\":\"Ol\u00e1, sou Benjamin, um professor aposentado de estat\u00edstica que se tornou professor dedicado na Statorials. 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