{"id":1994,"date":"2023-07-24T04:03:53","date_gmt":"2023-07-24T04:03:53","guid":{"rendered":"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/"},"modified":"2023-07-24T04:03:53","modified_gmt":"2023-07-24T04:03:53","slug":"replicar-funcao-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/","title":{"rendered":"Como usar a fun\u00e7\u00e3o replicate() em r (com exemplos)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a fun\u00e7\u00e3o <strong>replicate()<\/strong> para avaliar repetidamente uma express\u00e3o em R um certo n\u00famero de vezes.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Esta fun\u00e7\u00e3o usa a seguinte sintaxe b\u00e1sica:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>replicar (n, expr)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>n<\/strong> : O n\u00famero de vezes para avaliar repetidamente uma express\u00e3o.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>expr<\/strong> : A express\u00e3o a ser avaliada.<\/span><\/li>\n<\/ul>\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>Exemplo 1: replicar um valor v\u00e1rias vezes<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>replicate()<\/strong> para avaliar repetidamente um \u00fanico valor v\u00e1rias vezes:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replicate the value 3 exactly 10 times<\/span>\nreplicate(n= <span style=\"color: #008000;\">10,3<\/span> )\n\n[1] 3 3 3 3 3 3 3 3 3 3\n\n<span style=\"color: #008080;\">#replicate the letter 'A' exactly 7 times\n<\/span>replicate(n= <span style=\"color: #008000;\">7<\/span> , ' <span style=\"color: #ff0000;\">A<\/span> ')\n\n[1] \u201cA\u201d \u201cA\u201d \u201cA\u201d \u201cA\u201d \u201cA\u201d \u201cA\u201d \u201cA\u201d\n\n<span style=\"color: #008080;\">#replicate FALSE exactly 5 times<\/span>\nreplicate(n= <span style=\"color: #008000;\">5<\/span> , <span style=\"color: #008000;\">FALSE<\/span> )\n\n[1] FALSE FALSE FALSE FALSE FALSE\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 2: replicar uma fun\u00e7\u00e3o v\u00e1rias vezes<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Agora suponha que queiramos avaliar repetidamente uma fun\u00e7\u00e3o.<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Por exemplo, suponha que usemos a fun\u00e7\u00e3o <strong>rnorm()<\/strong> para produzir tr\u00eas valores para uma <a href=\"https:\/\/statorials.org\/pt\/variaveis-aleatorias\/\" target=\"_blank\" rel=\"noopener\">vari\u00e1vel aleat\u00f3ria<\/a> que segue uma distribui\u00e7\u00e3o normal com m\u00e9dia 0 e desvio padr\u00e3o 1:<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\"><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#generate 3 values that follow normal distribution\n<\/span>rnorm(3, mean= <span style=\"color: #008000;\">0<\/span> , sd= <span style=\"color: #008000;\">1<\/span> ) \n\n[1] -0.6264538 0.1836433 -0.8356286<\/span>\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Usando a fun\u00e7\u00e3o <strong>replicate()<\/strong> , podemos avaliar repetidamente esta fun\u00e7\u00e3o rnorm() v\u00e1rias vezes.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, podemos avaliar esta fun\u00e7\u00e3o 5 vezes:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\"><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#generate 3 values that follow normal distribution (replicate this 4 times)\n<\/span>replicate(n= <span style=\"color: #008000;\">4<\/span> , rnorm(3, mean= <span style=\"color: #008000;\">0<\/span> , sd= <span style=\"color: #008000;\">1<\/span> ))\n\n           [,1] [,2] [,3] [,4]\n[1,] 1.5952808 0.4874291 -0.3053884 -0.6212406\n[2,] 0.3295078 0.7383247 1.5117812 -2.2146999\n[3,] -0.8204684 0.5757814 0.3898432 1.1249309<\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O resultado \u00e9 uma matriz de 3 linhas e 4 colunas.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ou talvez gostar\u00edamos de avaliar esta fun\u00e7\u00e3o 6 vezes:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\"><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#generate 3 values that follow normal distribution (replicate this 6 times)\n<\/span>replicate(n= <span style=\"color: #008000;\">6<\/span> , rnorm(3, mean= <span style=\"color: #008000;\">0<\/span> , sd= <span style=\"color: #008000;\">1<\/span> ))\n\n           [,1] [,2] [,3] [,4] [,5] [,6]\n[1,] 1.5952808 0.4874291 -0.3053884 -0.6212406 -0.04493361 0.8212212\n[2,] 0.3295078 0.7383247 1.5117812 -2.2146999 -0.01619026 0.5939013\n[3,] -0.8204684 0.5757814 0.3898432 1.1249309 0.94383621 0.9189774<\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O resultado \u00e9 uma matriz de 6 linhas e 3 colunas.<\/span><\/p>\n<h3> <strong>Use replicate() para simular dados<\/strong><\/h3>\n<p> <span style=\"color: #000000;\">A fun\u00e7\u00e3o <strong>replicate()<\/strong> \u00e9 particularmente \u00fatil para executar simula\u00e7\u00f5es.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, suponha que queiramos gerar 5 amostras de tamanho n = 10, cada uma seguindo uma distribui\u00e7\u00e3o normal.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Podemos usar a fun\u00e7\u00e3o <strong>replicate()<\/strong> para produzir 5 amostras diferentes e podemos ent\u00e3o usar a fun\u00e7\u00e3o <strong>colMeans()<\/strong> para encontrar o valor m\u00e9dio de cada amostra:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#create 5 samples each of size n=10\n<\/span>data &lt;- replicate(n=5, rnorm(10, mean= <span style=\"color: #008000;\">0<\/span> , sd= <span style=\"color: #008000;\">1<\/span> ))\n\n<span style=\"color: #008080;\">#view samples\n<\/span>data\n\n            [,1] [,2] [,3] [,4] [,5]\n [1,] -0.6264538 1.51178117 0.91897737 1.35867955 -0.1645236\n [2,] 0.1836433 0.38984324 0.78213630 -0.10278773 -0.2533617\n [3,] -0.8356286 -0.62124058 0.07456498 0.38767161 0.6969634\n [4,] 1.5952808 -2.21469989 -1.98935170 -0.05380504 0.5566632\n [5,] 0.3295078 1.12493092 0.61982575 -1.37705956 -0.6887557\n [6,] -0.8204684 -0.04493361 -0.05612874 -0.41499456 -0.7074952\n [7,] 0.4874291 -0.01619026 -0.15579551 -0.39428995 0.3645820\n [8,] 0.7383247 0.94383621 -1.47075238 -0.05931340 0.7685329\n [9,] 0.5757814 0.82122120 -0.47815006 1.10002537 -0.1123462\n[10,] -0.3053884 0.59390132 0.41794156 0.76317575 0.8811077\n\n<span style=\"color: #008080;\">#calculate mean of each sample\n<\/span>colMeans(data)\n\n[1] 0.1322028 0.2488450 -0.1336732 0.1207302 0.1341367\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Pelo resultado podemos ver:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">A m\u00e9dia da primeira amostra \u00e9 <strong>0,1322<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">A m\u00e9dia da segunda amostra \u00e9 <strong>0,2488<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">A m\u00e9dia da terceira amostra \u00e9 <strong>-0,1337<\/strong> .<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">E assim por diante.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/selecione-colunas-especificas\/\" target=\"_blank\" rel=\"noopener\">Como selecionar colunas espec\u00edficas em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/coluna-rolante\/\" target=\"_blank\" rel=\"noopener\">Como remover colunas do quadro de dados em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/r-condicao-para-excluir-linhas-do-quadro-de-dados\/\" target=\"_blank\" rel=\"noopener\">Como remover linhas do quadro de dados com base na condi\u00e7\u00e3o em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a fun\u00e7\u00e3o replicate() para avaliar repetidamente uma express\u00e3o em R um certo n\u00famero de vezes. Esta fun\u00e7\u00e3o usa a seguinte sintaxe b\u00e1sica: replicar (n, expr) Ouro: n : O n\u00famero de vezes para avaliar repetidamente uma express\u00e3o. expr : A express\u00e3o a ser avaliada. Os exemplos a seguir mostram como usar esta [&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-1994","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 usar a fun\u00e7\u00e3o Replicate() em R (com exemplos) - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o replicate() 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\/replicar-funcao-em-r\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como usar a fun\u00e7\u00e3o Replicate() em R (com exemplos) - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o replicate() em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T04:03:53+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\/replicar-funcao-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/\",\"name\":\"Como usar a fun\u00e7\u00e3o Replicate() em R (com exemplos) - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-24T04:03:53+00:00\",\"dateModified\":\"2023-07-24T04:03:53+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar a fun\u00e7\u00e3o replicate() em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar a fun\u00e7\u00e3o replicate() em r (com exemplos)\"}]},{\"@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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