{"id":1538,"date":"2023-07-25T23:30:04","date_gmt":"2023-07-25T23:30:04","guid":{"rendered":"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse-python\/"},"modified":"2023-07-25T23:30:04","modified_gmt":"2023-07-25T23:30:04","slug":"coeficiente-de-correlacao-intraclasse-python","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse-python\/","title":{"rendered":"Como calcular o coeficiente de correla\u00e7\u00e3o intraclasse em python"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Um <a href=\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse\/\" target=\"_blank\" rel=\"noopener\">coeficiente de correla\u00e7\u00e3o intraclasse<\/a> (ICC) \u00e9 usado para determinar se itens ou t\u00f3picos podem ser avaliados de forma confi\u00e1vel por diferentes avaliadores.<\/span><\/p>\n<p> <span style=\"color: #000000;\">O valor de um ICC pode variar de 0 a 1, sendo que 0 indica nenhuma <a href=\"https:\/\/statorials.org\/pt\/analise-de-reabilitacao\/\" target=\"_blank\" rel=\"noopener\">confiabilidade<\/a> entre os avaliadores e 1 indica confiabilidade perfeita.<\/span><\/p>\n<p> <span style=\"color: #000000;\">A maneira mais f\u00e1cil de calcular o ICC em Python \u00e9 usar a fun\u00e7\u00e3o <a href=\"https:\/\/pingouin-stats.org\/generated\/pingouin.intraclass_corr.html\" target=\"_blank\" rel=\"noopener\">penguin.intraclass_corr()<\/a> do <a href=\"https:\/\/pingouin-stats.org\/index.html\" target=\"_blank\" rel=\"noopener\">pacote de estat\u00edsticas penguin<\/a> , que usa a seguinte sintaxe:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>pengouin.intraclass_corr(dados, alvos, avaliadores, notas)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>dados:<\/strong> o nome do quadro de dados<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>alvos:<\/strong> Nome da coluna que cont\u00e9m os \u201calvos\u201d (coisas sendo anotadas)<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>revisores:<\/strong> nome da coluna que cont\u00e9m os revisores<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>notas:<\/strong> Nome da coluna que cont\u00e9m as notas<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Este tutorial fornece um exemplo pr\u00e1tico de uso desse recurso.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Passo 1: Instale o Pinguim<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Primeiro de tudo, voc\u00ea precisa instalar o Penguin:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><span style=\"color: #000000;\"><b>pip <span style=\"color: #008000;\">install<\/span> penguin<\/b><\/span><\/span><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 2: crie os dados<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que quatro ju\u00edzes diferentes sejam solicitados a avaliar a qualidade de seis vestibulares diferentes. Podemos criar o seguinte dataframe para armazenar as pontua\u00e7\u00f5es dos ju\u00edzes:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><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;\">exam<\/span> ': [1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6,\n                            1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6],\n                   ' <span style=\"color: #ff0000;\">judge<\/span> ': ['A', 'A', 'A', 'A', 'A', 'A',\n                             'B', 'B', 'B', 'B', 'B', 'B',\n                             'C', 'C', 'C', 'C', 'C', 'C',\n                             'D', 'D', 'D', 'D', 'D', 'D'],\n                   ' <span style=\"color: #ff0000;\">rating<\/span> ': [1, 1, 3, 6, 6, 7, 2, 3, 8, 4, 5, 5,\n                              0, 4, 1, 5, 5, 6, 1, 2, 3, 3, 6, 4]})\n\n<span style=\"color: #008080;\">#view first five rows of DataFrame\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">head<\/span> ()\n\n\texam judge rating\n0 1 A 1\n1 2 A 1\n2 3 A 3\n3 4 To 6\n4 5 A 6\n<\/span><\/span><\/strong><\/span><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Passo 3: Calcular o coeficiente de correla\u00e7\u00e3o intraclasse<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">A seguir, usaremos o seguinte c\u00f3digo para calcular o coeficiente de correla\u00e7\u00e3o intraclasse:<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> penguin <span style=\"color: #008000;\">as<\/span> pg\n\nicc = pg. <span style=\"color: #3366ff;\">intraclass_corr<\/span> (data=df, targets=' <span style=\"color: #ff0000;\">exam<\/span> ', raters=' <span style=\"color: #ff0000;\">judge<\/span> ', ratings=' <span style=\"color: #ff0000;\">rating<\/span> ')\n\nicc. <span style=\"color: #3366ff;\">set_index<\/span> (' <span style=\"color: #ff0000;\">Type<\/span> ')\n\n        Description ICC F df1 df2 pval CI95%\nKind\t\t\t\t\t\t\t\nICC1 Single raters absolute 0.505252 5.084916 5 18 0.004430 [0.11, 0.89]\nICC2 Single random raters 0.503054 4.909385 5 15 0.007352 [0.1, 0.89]\nICC3 Single fixed raters 0.494272 4.909385 5 15 0.007352 [0.09, 0.88]\nICC1k Average raters absolute 0.803340 5.084916 5 18 0.004430 [0.33, 0.97]\nICC2k Average random raters 0.801947 4.909385 5 15 0.007352 [0.31, 0.97]\nICC3k Average fixed raters 0.796309 4.909385 5 15 0.007352 [0.27, 0.97]\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Esta fun\u00e7\u00e3o retorna os seguintes resultados:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>Descri\u00e7\u00e3o:<\/strong> O tipo de ICC calculado<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>ICC:<\/strong> O coeficiente de correla\u00e7\u00e3o intraclasse (ICC)<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>F:<\/strong> O valor F do ICC<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>df1, df2:<\/strong> os graus de liberdade associados ao valor F<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>pval:<\/strong> O valor p associado ao valor F<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>IC95%:<\/strong> intervalo de confian\u00e7a de 95% para o ICC<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Observe que existem seis ICCs diferentes calculados aqui. Na verdade, existem v\u00e1rias formas de calcular o ICC com base nos seguintes pressupostos:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>Modelo:<\/strong> efeitos aleat\u00f3rios unidirecionais, efeitos aleat\u00f3rios bidirecionais ou efeitos mistos bidirecionais<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>Tipo de relacionamento:<\/strong> consist\u00eancia ou acordo absoluto<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>Unidade:<\/strong> avaliador \u00fanico ou m\u00e9dia de avaliadores<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Para obter uma explica\u00e7\u00e3o detalhada dessas suposi\u00e7\u00f5es, consulte <a href=\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse\/\" target=\"_blank\" rel=\"noopener\">este artigo<\/a> .<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um coeficiente de correla\u00e7\u00e3o intraclasse (ICC) \u00e9 usado para determinar se itens ou t\u00f3picos podem ser avaliados de forma confi\u00e1vel por diferentes avaliadores. O valor de um ICC pode variar de 0 a 1, sendo que 0 indica nenhuma confiabilidade entre os avaliadores e 1 indica confiabilidade perfeita. A maneira mais f\u00e1cil de calcular o [&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-1538","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 o coeficiente de correla\u00e7\u00e3o intraclasse em Python<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como calcular um coeficiente de correla\u00e7\u00e3o intraclasse em Python, com um exemplo passo a passo.\" \/>\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\/coeficiente-de-correlacao-intraclasse-python\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como calcular o coeficiente de correla\u00e7\u00e3o intraclasse em Python\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como calcular um coeficiente de correla\u00e7\u00e3o intraclasse em Python, com um exemplo passo a passo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse-python\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T23:30:04+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\/coeficiente-de-correlacao-intraclasse-python\/\",\"url\":\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse-python\/\",\"name\":\"Como calcular o coeficiente de correla\u00e7\u00e3o intraclasse em Python\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-25T23:30:04+00:00\",\"dateModified\":\"2023-07-25T23:30:04+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como calcular um coeficiente de correla\u00e7\u00e3o intraclasse em Python, com um exemplo passo a passo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse-python\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse-python\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-intraclasse-python\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como calcular o coeficiente de correla\u00e7\u00e3o intraclasse em python\"}]},{\"@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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