{"id":2072,"date":"2023-07-23T20:13:12","date_gmt":"2023-07-23T20:13:12","guid":{"rendered":"https:\/\/statorials.org\/pt\/distribuicao-gama-em-r\/"},"modified":"2023-07-23T20:13:12","modified_gmt":"2023-07-23T20:13:12","slug":"distribuicao-gama-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/distribuicao-gama-em-r\/","title":{"rendered":"Como usar a distribui\u00e7\u00e3o gama em r (com exemplos)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Nas estat\u00edsticas, a <strong>distribui\u00e7\u00e3o gama<\/strong> \u00e9 frequentemente usada para modelar probabilidades relacionadas aos tempos de espera.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Podemos usar as seguintes fun\u00e7\u00f5es para trabalhar com a distribui\u00e7\u00e3o gama em R:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>dgamma(x, shape, rate)<\/strong> \u2013 encontra o valor da fun\u00e7\u00e3o de densidade de uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros de forma e taxa.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>pgamma(q, shape, rate)<\/strong> \u2013 encontra o valor da fun\u00e7\u00e3o de densidade cumulativa de uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros de forma e taxa.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>qgamma(p, shape, rate)<\/strong> \u2013 encontra o valor da fun\u00e7\u00e3o de densidade cumulativa inversa de uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros de forma e taxa.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>rgamma(n, shape, rate)<\/strong> \u2013 gera n vari\u00e1veis aleat\u00f3rias que seguem uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros de formato e taxa.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar cada uma dessas fun\u00e7\u00f5es na pr\u00e1tica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 1: Como usar dgamma()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>dgamma()<\/strong> para criar um gr\u00e1fico de densidade de probabilidade de uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define x-values\n<\/span>x &lt;- seq(0, 2, by=0.01)   \n  \n<span style=\"color: #008080;\">#calculate gamma density for each x-value\n<\/span>y &lt;- dgamma(x, shape=5) \n  \n<span style=\"color: #008080;\">#create density plot\n<\/span>plot(y)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-19292 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/gamma2.png\" alt=\"\" width=\"419\" height=\"379\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 2: Como usar pgamma()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>pgamma()<\/strong> para criar um gr\u00e1fico de densidade cumulativa de uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define x-values\n<\/span>x &lt;- seq(0, 2, by=0.01)   \n  \n<span style=\"color: #008080;\">#calculate gamma density for each x-value\n<\/span>y &lt;- pgamma(x, shape=5) \n  \n<span style=\"color: #008080;\">#create cumulative density plot\n<\/span>plot(y)<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-19293 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/gamma3.png\" alt=\"\" width=\"412\" height=\"384\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 3: Como usar qgamma()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>qgamma()<\/strong> para criar um gr\u00e1fico quant\u00edlico de uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define x-values\n<\/span>x &lt;- seq(0, 1, by=0.01)   \n  \n<span style=\"color: #008080;\">#calculate gamma density for each x-value\n<\/span>y &lt;- qgamma(x, shape=5) \n  \n<span style=\"color: #008080;\">#create quantile plot\n<\/span>plot(y)<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-19294 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/gamma4.png\" alt=\"\" width=\"418\" height=\"384\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 4: Como usar rgamma()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>rgamma()<\/strong> para gerar e visualizar 1.000 vari\u00e1veis aleat\u00f3rias que seguem uma distribui\u00e7\u00e3o gama com um par\u00e2metro de forma de 5 e um par\u00e2metro de taxa de 3:<\/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> (0)\n\n<span style=\"color: #008080;\">#generate 1,000 random values that follow gamma distribution\n<\/span>x &lt;- rgamma(n=1000, shape=5, rate=3)\n\n<span style=\"color: #008080;\">#create histogram to view distribution of values\n<\/span>hist(x)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-19291 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/gamma1.png\" alt=\"\" width=\"415\" height=\"427\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como usar outras distribui\u00e7\u00f5es estat\u00edsticas comuns em R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/dnorm-pnorm-rnorm-qnorm-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a distribui\u00e7\u00e3o normal em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/dbinom-pbinom-qbinom-rbinom-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar distribui\u00e7\u00e3o binomial em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/ppois-ppois-qpois-rpois-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a distribui\u00e7\u00e3o de Poisson em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/dgeom-pgeom-qgeom-rgeom-r\/\" target=\"_blank\" rel=\"noopener\">Como usar distribui\u00e7\u00e3o geom\u00e9trica em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nas estat\u00edsticas, a distribui\u00e7\u00e3o gama \u00e9 frequentemente usada para modelar probabilidades relacionadas aos tempos de espera. Podemos usar as seguintes fun\u00e7\u00f5es para trabalhar com a distribui\u00e7\u00e3o gama em R: dgamma(x, shape, rate) \u2013 encontra o valor da fun\u00e7\u00e3o de densidade de uma distribui\u00e7\u00e3o gama com determinados par\u00e2metros de forma e taxa. pgamma(q, shape, rate) \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-2072","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 distribui\u00e7\u00e3o gama em R (com exemplos) - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar gammag\" \/>\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\/distribuicao-gama-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 distribui\u00e7\u00e3o gama em R (com exemplos) - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar gammag\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/distribuicao-gama-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-23T20:13:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/gamma2.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\/distribuicao-gama-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/distribuicao-gama-em-r\/\",\"name\":\"Como usar a distribui\u00e7\u00e3o gama em R (com exemplos) - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-23T20:13:12+00:00\",\"dateModified\":\"2023-07-23T20:13:12+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar gammag\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/distribuicao-gama-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/distribuicao-gama-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/distribuicao-gama-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar a distribui\u00e7\u00e3o gama 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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