{"id":1628,"date":"2023-07-25T14:37:56","date_gmt":"2023-07-25T14:37:56","guid":{"rendered":"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-em-r\/"},"modified":"2023-07-25T14:37:56","modified_gmt":"2023-07-25T14:37:56","slug":"desvio-padrao-ponderado-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-em-r\/","title":{"rendered":"Como calcular o desvio padr\u00e3o ponderado em r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>O desvio padr\u00e3o ponderado<\/strong> \u00e9 uma forma \u00fatil de medir a dispers\u00e3o de valores em um conjunto de dados quando alguns valores no conjunto de dados t\u00eam pesos mais altos do que outros.<\/span><\/p>\n<p> <span style=\"color: #000000;\">A f\u00f3rmula para calcular um desvio padr\u00e3o ponderado \u00e9:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14345 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pondere_sd1.png\" alt=\"\" width=\"218\" height=\"92\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>N:<\/strong> O n\u00famero total de <a href=\"https:\/\/statorials.org\/pt\/observacao-em-estatisticas\/\" target=\"_blank\" rel=\"noopener\">observa\u00e7\u00f5es<\/a><\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>M:<\/strong> O n\u00famero de pesos diferentes de zero<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>w <sub>i<\/sub> :<\/strong> Um vetor de peso<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>x <sub>i<\/sub> :<\/strong> Um vetor de valores de dados<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong><span style=\"border-top: 1px solid black;\">x<\/span> :<\/strong> A m\u00e9dia ponderada<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">A maneira mais f\u00e1cil de calcular um desvio padr\u00e3o ponderado em R \u00e9 usar a fun\u00e7\u00e3o <strong>wt.var()<\/strong> do pacote <strong>Hmisc<\/strong> , que usa a seguinte sintaxe:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define data values<\/span>\nx &lt;- c(4, 7, 12, 13, ...)\n\n<span style=\"color: #008080;\">#define weights\n<\/span>wt &lt;- c(.5, 1, 2, 2, ...)\n\n<span style=\"color: #008080;\">#calculate weighted variance\n<\/span>weighted_var &lt;- wtd. <span style=\"color: #3366ff;\">var<\/span> (x, wt)\n\n<span style=\"color: #008080;\">#calculate weighted standard deviation\n<\/span>weighted_sd &lt;- sqrt(weighted_var)\n<\/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>Exemplo 1: Desvio padr\u00e3o ponderado para um vetor<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular o desvio padr\u00e3o ponderado para um \u00fanico vetor em R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (Hmisc)\n\n<span style=\"color: #008080;\">#define data values<\/span> \nx &lt;- c(14, 19, 22, 25, 29, 31, 31, 38, 40, 41)\n\n<span style=\"color: #008080;\">#define weights<\/span>\nwt &lt;- c(1, 1, 1.5, 2, 2, 1.5, 1, 2, 3, 2)\n\n<span style=\"color: #008080;\">#calculate weighted variance<\/span> \nweighted_var &lt;- wtd. <span style=\"color: #3366ff;\">var<\/span> (x, wt)\n\n<span style=\"color: #008080;\">#calculate weighted standard deviation\n<\/span>sqrt(weighted_var)\n\n[1] 8.570051\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O desvio padr\u00e3o ponderado \u00e9 <strong>8,57<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 2: Desvio padr\u00e3o ponderado para uma coluna no quadro de dados<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como calcular o desvio padr\u00e3o ponderado para uma coluna de um quadro de dados em R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (Hmisc)\n<span style=\"color: #008080;\">\n#define data frame\n<span style=\"color: #000000;\">df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('A', 'A', 'A', 'A', 'A', 'B', 'B', 'C'),\n                 wins=c(2, 9, 11, 12, 15, 17, 18, 19),\n                 dots=c(1, 2, 2, 2, 3, 3, 3, 3))\n\n<span style=\"color: #008080;\">#define weights\n<\/span>wt &lt;- c(1, 1, 1.5, 2, 2, 1.5, 1, 2)\n\n<span style=\"color: #008080;\">#calculate weighted standard deviation of points\n<\/span>sqrt(wtd. <span style=\"color: #3366ff;\">var<\/span> (df$points, wt))\n\n[1] 0.6727938\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O desvio padr\u00e3o ponderado para a coluna de pontos \u00e9 <strong>0,673<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 3: Desvio padr\u00e3o ponderado para m\u00faltiplas colunas em um quadro de dados<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <a href=\"https:\/\/statorials.org\/pt\/um-guia-para-aplicar-lapply-sapply-e-tapply-em-r\/\" target=\"_blank\" rel=\"noopener\">sapply()<\/a> em R para calcular o desvio padr\u00e3o ponderado para m\u00faltiplas colunas em um quadro de dados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (Hmisc)\n<span style=\"color: #008080;\">\n#define data frame\n<span style=\"color: #000000;\">df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('A', 'A', 'A', 'A', 'A', 'B', 'B', 'C'),\n                 wins=c(2, 9, 11, 12, 15, 17, 18, 19),\n                 dots=c(1, 2, 2, 2, 3, 3, 3, 3))\n\n<span style=\"color: #008080;\">#define weights\n<\/span>wt &lt;- c(1, 1, 1.5, 2, 2, 1.5, 1, 2)\n\n<span style=\"color: #008080;\">#calculate weighted standard deviation of points and wins\n<\/span>sapply(df[c(' <span style=\"color: #008000;\">wins<\/span> ', ' <span style=\"color: #008000;\">points<\/span> ')], function(x) sqrt(wtd. <span style=\"color: #3366ff;\">var<\/span> (x, wt)))\n\n     win points \n4.9535723 0.6727938 \n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O desvio padr\u00e3o ponderado para a coluna de vit\u00f3rias \u00e9 <strong>4,954<\/strong> e o desvio padr\u00e3o ponderado para a coluna de pontos \u00e9 <strong>0,673<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-excel\/\" target=\"_blank\" rel=\"noopener\">Como calcular o desvio padr\u00e3o ponderado no Excel<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/desvio-padrao-em-r\/\" target=\"_blank\" rel=\"noopener\">Como calcular o desvio padr\u00e3o em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/coeficiente-de-variacao-de-r\/\" target=\"_blank\" rel=\"noopener\">Como calcular o coeficiente de varia\u00e7\u00e3o de R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/praia-em-r\/\" target=\"_blank\" rel=\"noopener\">Como calcular o intervalo em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O desvio padr\u00e3o ponderado \u00e9 uma forma \u00fatil de medir a dispers\u00e3o de valores em um conjunto de dados quando alguns valores no conjunto de dados t\u00eam pesos mais altos do que outros. A f\u00f3rmula para calcular um desvio padr\u00e3o ponderado \u00e9: Ouro: N: O n\u00famero total de observa\u00e7\u00f5es M: O n\u00famero de pesos diferentes [&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-1628","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 desvio padr\u00e3o ponderado em R<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como calcular o desvio padr\u00e3o ponderado em R, com 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\/desvio-padrao-ponderado-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 o desvio padr\u00e3o ponderado em R\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como calcular o desvio padr\u00e3o ponderado em R, com exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T14:37:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pondere_sd1.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\/desvio-padrao-ponderado-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-em-r\/\",\"name\":\"Como calcular o desvio padr\u00e3o ponderado em R\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-25T14:37:56+00:00\",\"dateModified\":\"2023-07-25T14:37:56+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como calcular o desvio padr\u00e3o ponderado em R, com exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/desvio-padrao-ponderado-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como calcular o desvio padr\u00e3o ponderado 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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