{"id":1352,"date":"2023-07-26T18:18:15","date_gmt":"2023-07-26T18:18:15","guid":{"rendered":"https:\/\/statorials.org\/pt\/correlacao-entre-diversas-variaveis-em-r\/"},"modified":"2023-07-26T18:18:15","modified_gmt":"2023-07-26T18:18:15","slug":"correlacao-entre-diversas-variaveis-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/correlacao-entre-diversas-variaveis-em-r\/","title":{"rendered":"Como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Uma forma de quantificar a rela\u00e7\u00e3o entre duas vari\u00e1veis \u00e9 utilizar o <a href=\"https:\/\/statorials.org\/pt\/coeficiente-de-correlacao-de-pearson-1\/\" target=\"_blank\" rel=\"noopener noreferrer\">coeficiente de correla\u00e7\u00e3o de Pearson<\/a> , que \u00e9 uma medida da associa\u00e7\u00e3o linear entre duas vari\u00e1veis <em>.<\/em> Sempre assume um valor entre -1 e 1 onde:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">-1 indica uma correla\u00e7\u00e3o linear perfeitamente negativa entre duas vari\u00e1veis<\/span><\/li>\n<li> <span style=\"color: #000000;\">0 indica nenhuma correla\u00e7\u00e3o linear entre duas vari\u00e1veis<\/span><\/li>\n<li> <span style=\"color: #000000;\">1 indica uma correla\u00e7\u00e3o linear perfeitamente positiva entre duas vari\u00e1veis<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Este tutorial explica como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em R, usando o seguinte quadro de dados como exemplo:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(a &lt;- c(2, 3, 3, 5, 6, 9, 14, 15, 19, 21, 22, 23),\n                 b &lt;- c(23, 24, 24, 23, 17, 28, 38, 34, 35, 39, 41, 43),\n                 c &lt;- c(13, 14, 14, 14, 15, 17, 18, 19, 22, 20, 24, 26),\n                 d &lt;- c(6, 6, 7, 8, 8, 8, 7, 6, 5, 3, 3, 2))\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 1: Correla\u00e7\u00e3o entre duas vari\u00e1veis<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular a correla\u00e7\u00e3o entre duas vari\u00e1veis no quadro de dados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>cor(df$a, df$b)\n\n[1] 0.9279869\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 2: Correla\u00e7\u00e3o entre diversas vari\u00e1veis<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular a correla\u00e7\u00e3o entre tr\u00eas vari\u00e1veis no quadro de dados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>cor(df[, c(' <span style=\"color: #008000;\">a<\/span> ', ' <span style=\"color: #008000;\">b<\/span> ', ' <span style=\"color: #008000;\">c<\/span> ')])\n\n          ABC\na 1.0000000 0.9279869 0.9604329\nb 0.9279869 1.0000000 0.8942139\nc 0.9604329 0.8942139 1.0000000<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">A forma de interpretar o resultado \u00e9 a seguinte:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">A correla\u00e7\u00e3o entre <em>a<\/em> e <em>b<\/em> \u00e9 0,9279869.<\/span><\/li>\n<li> <span style=\"color: #000000;\">A correla\u00e7\u00e3o entre <em>a<\/em> e <em>c<\/em> \u00e9 0,9604329.<\/span><\/li>\n<li> <span style=\"color: #000000;\">A correla\u00e7\u00e3o entre <em>b<\/em> e <em>c<\/em> \u00e9 0,8942139.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 3: Correla\u00e7\u00e3o entre todas as vari\u00e1veis<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular a correla\u00e7\u00e3o entre todas as vari\u00e1veis em um quadro de dados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>cor(df)\n\n           abcd\na 1.0000000 0.9279869 0.9604329 -0.7915488\nb 0.9279869 1.0000000 0.8942139 -0.7917973\nc 0.9604329 0.8942139 1.0000000 -0.8063549\nd -0.7915488 -0.7917973 -0.8063549 1.0000000<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 4: Correla\u00e7\u00e3o apenas entre vari\u00e1veis num\u00e9ricas<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular a correla\u00e7\u00e3o apenas entre vari\u00e1veis num\u00e9ricas em um quadro de dados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>cor(df[, <span style=\"color: #3366ff;\">unlist<\/span> ( <span style=\"color: #3366ff;\">lapply<\/span> (df, is. <span style=\"color: #3366ff;\">numeric<\/span> ))])\n\n           abcd\na 1.0000000 0.9279869 0.9604329 -0.7915488\nb 0.9279869 1.0000000 0.8942139 -0.7917973\nc 0.9604329 0.8942139 1.0000000 -0.8063549\nd -0.7915488 -0.7917973 -0.8063549 1.0000000\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 5: Visualizando correla\u00e7\u00f5es<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar um gr\u00e1fico de pares \u2013 um tipo de gr\u00e1fico que permite visualizar o relacionamento entre cada combina\u00e7\u00e3o de vari\u00e1veis de pares:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#load psych package<\/span>\nlibrary(psych)\n\n<span style=\"color: #008080;\">#create pairs plot<\/span>\npeers. <span style=\"color: #3366ff;\">panels<\/span> (df)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13220 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/paires1.png\" alt=\"\" width=\"421\" height=\"432\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/correlacao-parcial-r\/\" target=\"_blank\" rel=\"noopener\">Como calcular a correla\u00e7\u00e3o parcial em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/correlacao-bisserial-pontual-r\/\" target=\"_blank\" rel=\"noopener\">Como calcular a correla\u00e7\u00e3o ponto-bisserial em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/correlacao-rolante-em-r\/\" target=\"_blank\" rel=\"noopener\">Como calcular a correla\u00e7\u00e3o deslizante em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma forma de quantificar a rela\u00e7\u00e3o entre duas vari\u00e1veis \u00e9 utilizar o coeficiente de correla\u00e7\u00e3o de Pearson , que \u00e9 uma medida da associa\u00e7\u00e3o linear entre duas vari\u00e1veis . Sempre assume um valor entre -1 e 1 onde: -1 indica uma correla\u00e7\u00e3o linear perfeitamente negativa entre duas vari\u00e1veis 0 indica nenhuma correla\u00e7\u00e3o linear entre duas [&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-1352","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 a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em R<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em R, com v\u00e1rios exemplos.\" \/>\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\/correlacao-entre-diversas-variaveis-em-r\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em R\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/correlacao-entre-diversas-variaveis-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-26T18:18:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/paires1.png\" \/>\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\/correlacao-entre-diversas-variaveis-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/correlacao-entre-diversas-variaveis-em-r\/\",\"name\":\"Como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em R\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-26T18:18:15+00:00\",\"dateModified\":\"2023-07-26T18:18:15+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/correlacao-entre-diversas-variaveis-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/correlacao-entre-diversas-variaveis-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/correlacao-entre-diversas-variaveis-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como calcular a correla\u00e7\u00e3o entre m\u00faltiplas vari\u00e1veis em r\"}]},{\"@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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