{"id":1647,"date":"2023-07-25T12:56:56","date_gmt":"2023-07-25T12:56:56","guid":{"rendered":"https:\/\/statorials.org\/pt\/transformacao-box-cox-excel\/"},"modified":"2023-07-25T12:56:56","modified_gmt":"2023-07-25T12:56:56","slug":"transformacao-box-cox-excel","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/transformacao-box-cox-excel\/","title":{"rendered":"Transforma\u00e7\u00e3o box-cox no excel (passo a passo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Uma <strong>transforma\u00e7\u00e3o box-cox<\/strong> \u00e9 um m\u00e9todo comumente usado para transformar um conjunto de dados distribu\u00eddo n\u00e3o normalmente em um conjunto <a href=\"https:\/\/statorials.org\/pt\/a-distribuicao-normal\/\" target=\"_blank\" rel=\"noopener noreferrer\">distribu\u00eddo mais normalmente<\/a> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">A ideia b\u00e1sica \u00e9 encontrar um valor para \u03bb tal que os dados transformados estejam o mais pr\u00f3ximo poss\u00edvel da distribui\u00e7\u00e3o normal, usando a seguinte f\u00f3rmula:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">y(\u03bb) = (y <sup>\u03bb<\/sup> \u2013 1) \/ \u03bb se y \u2260 0<\/span><\/li>\n<li> <span style=\"color: #000000;\">y(\u03bb) = log(y) se y = 0<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">O exemplo passo a passo a seguir mostra como realizar uma transforma\u00e7\u00e3o box-cox em um conjunto de dados no Excel.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Passo 1: Insira os dados<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Vamos come\u00e7ar inserindo valores de um conjunto de dados:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-16242 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel1.png\" alt=\"\" width=\"432\" height=\"429\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 2: classificar os dados<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Em seguida, crie uma coluna de \u00edndice e uma coluna de dados classificada:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-16244 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel2.png\" alt=\"\" width=\"457\" height=\"404\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 3: escolha um valor arbitr\u00e1rio para Lambda<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A seguir, escolheremos um valor arbitr\u00e1rio de 1 para lambda e aplicaremos uma transforma\u00e7\u00e3o box-cox tempor\u00e1ria aos dados:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-16245 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel3.png\" alt=\"\" width=\"533\" height=\"345\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 4: calcular pontua\u00e7\u00f5es Z<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A seguir, calcularemos a pontua\u00e7\u00e3o z para cada valor do \u00edndice:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-16246 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel4.png\" alt=\"\" width=\"567\" height=\"378\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Calcularemos ent\u00e3o a correla\u00e7\u00e3o entre os valores transformados de box-cox e os escores z:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-16247 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel5.png\" alt=\"\" width=\"648\" height=\"381\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 5: Encontre o valor Lambda ideal<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A seguir, usaremos Goal Seek para encontrar o valor lambda ideal para usar na transforma\u00e7\u00e3o box-cox.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Para fazer isso, clique na guia <strong>Dados<\/strong> na faixa superior. Em seguida, clique em <strong>An\u00e1lise What-If<\/strong> no grupo <strong>Previs\u00f5es<\/strong> .<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-16248 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel6.png\" alt=\"\" width=\"578\" height=\"106\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">No menu suspenso, clique em <strong>Pesquisa de meta<\/strong> e preencha os seguintes valores:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-16249\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel7.png\" alt=\"Transforma\u00e7\u00e3o Box-Cox no Excel\" width=\"564\" height=\"357\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Depois de clicar em <strong>OK<\/strong> , o Goal Seek encontrar\u00e1 automaticamente o valor lambda ideal que \u00e9 <strong>-0,5225<\/strong> .<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-16250 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel8.png\" alt=\"\" width=\"365\" height=\"398\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 6: realizar a transforma\u00e7\u00e3o Box-Cox<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Por fim, aplicaremos a transforma\u00e7\u00e3o box-cox aos dados originais, usando um valor lambda de -0,5225:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-16251 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel9.png\" alt=\"\" width=\"601\" height=\"411\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><strong>B\u00f4nus:<\/strong> podemos confirmar que os dados transformados t\u00eam distribui\u00e7\u00e3o normal realizando um <a href=\"https:\/\/statorials.org\/pt\/teste-de-normalidade-do-excel\/\" target=\"_blank\" rel=\"noopener\">teste Jarque-Bera no Excel<\/a> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/transformar-dados-em-excel\/\" target=\"_blank\" rel=\"noopener\">Como transformar dados no Excel (log, raiz quadrada, raiz c\u00fabica)<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pontuacao-z-excel\/\" target=\"_blank\" rel=\"noopener\">Como calcular pontua\u00e7\u00f5es Z no Excel<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma transforma\u00e7\u00e3o box-cox \u00e9 um m\u00e9todo comumente usado para transformar um conjunto de dados distribu\u00eddo n\u00e3o normalmente em um conjunto distribu\u00eddo mais normalmente . A ideia b\u00e1sica \u00e9 encontrar um valor para \u03bb tal que os dados transformados estejam o mais pr\u00f3ximo poss\u00edvel da distribui\u00e7\u00e3o normal, usando a seguinte f\u00f3rmula: y(\u03bb) = (y \u03bb \u2013 [&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-1647","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>Transforma\u00e7\u00e3o Box-Cox no Excel (passo a passo)<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como realizar uma transforma\u00e7\u00e3o box-cox no Excel, 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\/transformacao-box-cox-excel\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Transforma\u00e7\u00e3o Box-Cox no Excel (passo a passo)\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como realizar uma transforma\u00e7\u00e3o box-cox no Excel, com um exemplo passo a passo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/transformacao-box-cox-excel\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T12:56:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/boiteexcel1.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\/transformacao-box-cox-excel\/\",\"url\":\"https:\/\/statorials.org\/pt\/transformacao-box-cox-excel\/\",\"name\":\"Transforma\u00e7\u00e3o Box-Cox no Excel (passo a passo)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-25T12:56:56+00:00\",\"dateModified\":\"2023-07-25T12:56:56+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como realizar uma transforma\u00e7\u00e3o box-cox no Excel, com um exemplo passo a passo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/transformacao-box-cox-excel\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/transformacao-box-cox-excel\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/transformacao-box-cox-excel\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Transforma\u00e7\u00e3o box-cox no excel (passo a passo)\"}]},{\"@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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