{"id":1086,"date":"2023-07-27T17:17:59","date_gmt":"2023-07-27T17:17:59","guid":{"rendered":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/"},"modified":"2023-07-27T17:17:59","modified_gmt":"2023-07-27T17:17:59","slug":"calcular-a-media-de-multiplas-colunas-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/","title":{"rendered":"Como calcular a m\u00e9dia de m\u00faltiplas colunas em r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Freq\u00fcentemente, voc\u00ea pode querer calcular a m\u00e9dia de v\u00e1rias colunas em R. Felizmente, voc\u00ea pode fazer isso facilmente usando a fun\u00e7\u00e3o <strong>colMeans()<\/strong> .<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>colMeans(df)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar esta fun\u00e7\u00e3o na pr\u00e1tica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Usando colMeans() para encontrar a m\u00e9dia de m\u00faltiplas colunas<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>colMeans()<\/strong> para encontrar a m\u00e9dia de cada coluna em um quadro de dados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(var1=c(1, 3, 3, 4, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 9))\n\n<span style=\"color: #008080;\">#find mean of each column<\/span>\ncolMeans(df)\n\nvar1 var2 var3 var4 \n 3.2 5.4 5.2 4.2 \n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Tamb\u00e9m podemos especificar para <em>quais<\/em> colunas encontrar a m\u00e9dia:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#find the mean of columns 2 and 3<\/span>\ncolMeans(df[, c(2, 3)])\n\nvar2 var3 \n 5.4 5.2 \n\n<span style=\"color: #008080;\">#find the mean of the first three columns<\/span>\ncolMeans(df[, 1:3])\n\nvar1 var2 var3 \n 3.2 5.4 5.2<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Se houver colunas que n\u00e3o sejam num\u00e9ricas, voc\u00ea pode usar <a href=\"https:\/\/statorials.org\/pt\/um-guia-para-aplicar-lapply-sapply-e-tapply-em-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">sapply()<\/a> para especificar que deseja encontrar apenas a m\u00e9dia das colunas num\u00e9ricas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(var1=c(1, 3, 3, 4, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 9),\n                 var5=c('a', 'a', 'b', 'b', 'c'))\n\n<span style=\"color: #008080;\">#find mean of <em>only<\/em> numeric columns<\/span>\ncolMeans(df[ <span style=\"color: #3366ff;\">sapply<\/span> (df, is.numeric)])\n\nvar1 var2 var3 var4 \n 3.2 5.4 5.2 4.2<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">E se houver valores faltantes em alguma coluna, voc\u00ea pode usar o argumento <strong>na.rm=TRUE<\/strong> para ignorar os valores faltantes ao calcular m\u00e9dias:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame with some missing values<\/span>\ndf &lt;- data.frame(var1=c(1, 3, NA, NA, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, NA))\n\n<span style=\"color: #008080;\">#find mean of each column and ignore missing values<\/span>\ncolMeans(df, na.rm= <span style=\"color: #008000;\">TRUE<\/span> )\n\nvar1 var2 var3 var4 \n 3.0 5.4 5.2 3.0<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/colunas-de-quadro-de-dados-de-loop-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como iterar sobre nomes de colunas em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/adicione-colunas-especificas-em-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como somar colunas espec\u00edficas em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Freq\u00fcentemente, voc\u00ea pode querer calcular a m\u00e9dia de v\u00e1rias colunas em R. Felizmente, voc\u00ea pode fazer isso facilmente usando a fun\u00e7\u00e3o colMeans() . colMeans(df) Os exemplos a seguir mostram como usar esta fun\u00e7\u00e3o na pr\u00e1tica. Usando colMeans() para encontrar a m\u00e9dia de m\u00faltiplas colunas O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o colMeans() para [&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-1086","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 m\u00e9dia de m\u00faltiplas colunas em R - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial demonstra v\u00e1rios m\u00e9todos diferentes que voc\u00ea pode usar para calcular a m\u00e9dia de m\u00faltiplas colunas em um quadro de dados em R.\" \/>\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\/calcular-a-media-de-multiplas-colunas-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 m\u00e9dia de m\u00faltiplas colunas em R - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial demonstra v\u00e1rios m\u00e9todos diferentes que voc\u00ea pode usar para calcular a m\u00e9dia de m\u00faltiplas colunas em um quadro de dados em R.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T17:17:59+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=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/\",\"name\":\"Como calcular a m\u00e9dia de m\u00faltiplas colunas em R - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-27T17:17:59+00:00\",\"dateModified\":\"2023-07-27T17:17:59+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial demonstra v\u00e1rios m\u00e9todos diferentes que voc\u00ea pode usar para calcular a m\u00e9dia de m\u00faltiplas colunas em um quadro de dados em R.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como calcular a m\u00e9dia de m\u00faltiplas colunas 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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais\",\"sameAs\":[\"https:\/\/statorials.org\/pt\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Como calcular a m\u00e9dia de m\u00faltiplas colunas em R - Estatologia","description":"Este tutorial demonstra v\u00e1rios m\u00e9todos diferentes que voc\u00ea pode usar para calcular a m\u00e9dia de m\u00faltiplas colunas em um quadro de dados em R.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/","og_locale":"pt_PT","og_type":"article","og_title":"Como calcular a m\u00e9dia de m\u00faltiplas colunas em R - Estatologia","og_description":"Este tutorial demonstra v\u00e1rios m\u00e9todos diferentes que voc\u00ea pode usar para calcular a m\u00e9dia de m\u00faltiplas colunas em um quadro de dados em R.","og_url":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/","og_site_name":"Statorials","article_published_time":"2023-07-27T17:17:59+00:00","author":"Dr. benjamim anderson","twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"Dr. benjamim anderson","Tempo estimado de leitura":"1 minuto"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/","url":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/","name":"Como calcular a m\u00e9dia de m\u00faltiplas colunas em R - Estatologia","isPartOf":{"@id":"https:\/\/statorials.org\/pt\/#website"},"datePublished":"2023-07-27T17:17:59+00:00","dateModified":"2023-07-27T17:17:59+00:00","author":{"@id":"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666"},"description":"Este tutorial demonstra v\u00e1rios m\u00e9todos diferentes que voc\u00ea pode usar para calcular a m\u00e9dia de m\u00faltiplas colunas em um quadro de dados em R.","breadcrumb":{"@id":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/#breadcrumb"},"inLanguage":"pt-PT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/pt\/calcular-a-media-de-multiplas-colunas-em-r\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Lar","item":"https:\/\/statorials.org\/pt\/"},{"@type":"ListItem","position":2,"name":"Como calcular a m\u00e9dia de m\u00faltiplas colunas 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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais","sameAs":["https:\/\/statorials.org\/pt"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/1086","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/comments?post=1086"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/1086\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/media?parent=1086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/categories?post=1086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/tags?post=1086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}