{"id":1494,"date":"2023-07-26T04:07:40","date_gmt":"2023-07-26T04:07:40","guid":{"rendered":"https:\/\/statorials.org\/pt\/tracar-uma-distribuicao-exponencial-em-r\/"},"modified":"2023-07-26T04:07:40","modified_gmt":"2023-07-26T04:07:40","slug":"tracar-uma-distribuicao-exponencial-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/tracar-uma-distribuicao-exponencial-em-r\/","title":{"rendered":"Como tra\u00e7ar uma distribui\u00e7\u00e3o exponencial em r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">A <a href=\"https:\/\/statorials.org\/pt\/distribuicao-exponencial-1\/\" target=\"_blank\" rel=\"noopener\">distribui\u00e7\u00e3o exponencial<\/a> \u00e9 uma distribui\u00e7\u00e3o de probabilidade usada para modelar o tempo que temos que esperar at\u00e9 que um determinado evento ocorra.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Se uma <a href=\"https:\/\/statorials.org\/pt\/variaveis-aleatorias\/\" target=\"_blank\" rel=\"noopener\">vari\u00e1vel aleat\u00f3ria<\/a> <em>X<\/em> segue uma distribui\u00e7\u00e3o exponencial, ent\u00e3o a <strong>fun\u00e7\u00e3o de densidade de probabilidade<\/strong> de <em>X<\/em> pode ser escrita:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong><em>f<\/em> (x; \u03bb) = \u03bbe <sup>-\u03bbx<\/sup><\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>\u03bb:<\/strong> o par\u00e2metro de taxa<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>e:<\/strong> Uma constante aproximadamente igual a 2,718<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">A <strong>fun\u00e7\u00e3o de distribui\u00e7\u00e3o<\/strong> <em>cumulativa<\/em> de<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong><em>F<\/em> (x; \u03bb) = 1 \u2013 e <sup>-\u03bbx<\/sup><\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Este tutorial explica como plotar um PDF e um CDF para a distribui\u00e7\u00e3o exponencial em R.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Tra\u00e7ando uma fun\u00e7\u00e3o de densidade de probabilidade<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como plotar um PDF de uma distribui\u00e7\u00e3o exponencial com um par\u00e2metro de taxa \u03bb = 0,5:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\">curve<\/span> ( <span style=\"color: #3366ff;\">dexp<\/span> (x, rate = .5), from=0, to=10, col=' <span style=\"color: #008000;\">blue<\/span> ')\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14826 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/exp3.png\" alt=\"Gr\u00e1fico exponencial PDF em R\" width=\"430\" height=\"386\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como plotar v\u00e1rios PDFs de uma distribui\u00e7\u00e3o exponencial com diferentes par\u00e2metros de taxa:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #008080;\">#plot PDF curves<\/span>\ncurve<\/span> ( <span style=\"color: #3366ff;\">dexp<\/span> (x, rate = .5), from=0, to=10, col=' <span style=\"color: #008000;\">blue<\/span> ')\n<span style=\"color: #3366ff;\">curve<\/span> ( <span style=\"color: #3366ff;\">dexp<\/span> (x, rate = 1), from=0, to=10, col=' <span style=\"color: #008000;\">red<\/span> ', add= <span style=\"color: #008000;\">TRUE<\/span> )\n<span style=\"color: #3366ff;\">curve<\/span> ( <span style=\"color: #3366ff;\">dexp<\/span> (x, rate = 1.5), from=0, to=10, col=' <span style=\"color: #008000;\">purple<\/span> ', add= <span style=\"color: #008000;\">TRUE<\/span> )\n\n<span style=\"color: #3366ff;\"><span style=\"color: #008080;\">#add legend<\/span>\nlegend<\/span> (7, .5, legend=c(\" <span style=\"color: #008000;\">rate=.5<\/span> \", \" <span style=\"color: #008000;\">rate=1<\/span> \", \" <span style=\"color: #008000;\">rate=1.5<\/span> \"),\n       col=c(\" <span style=\"color: #008000;\">blue<\/span> \", \" <span style=\"color: #008000;\">red<\/span> \", \" <span style=\"color: #008000;\">purple<\/span> \"), lty=1, cex=1.2)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14827 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/exp4.png\" alt=\"Plotando m\u00faltiplas fun\u00e7\u00f5es PDF exponenciais em R\" width=\"430\" height=\"394\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Tra\u00e7ando uma fun\u00e7\u00e3o de distribui\u00e7\u00e3o cumulativa<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como tra\u00e7ar um CDF de uma distribui\u00e7\u00e3o exponencial com um par\u00e2metro de taxa \u03bb = 0,5:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\">curve<\/span> ( <span style=\"color: #3366ff;\">pexp<\/span> (x, rate = .5), from=0, to=10, col=' <span style=\"color: #008000;\">blue<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14828 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/exp5.png\" alt=\"Gr\u00e1fico exponencial de CDF em R\" width=\"435\" height=\"397\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como plotar v\u00e1rios CDFs de uma distribui\u00e7\u00e3o exponencial com diferentes par\u00e2metros de taxa:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #008080;\">#plot CDF curves<\/span>\ncurve<\/span> ( <span style=\"color: #3366ff;\">pexp<\/span> (x, rate = .5), from=0, to=10, col=' <span style=\"color: #008000;\">blue<\/span> ')\n<span style=\"color: #3366ff;\">curve<\/span> ( <span style=\"color: #3366ff;\">pexp<\/span> (x, rate = 1), from=0, to=10, col=' <span style=\"color: #008000;\">red<\/span> ', add= <span style=\"color: #008000;\">TRUE<\/span> )\n<span style=\"color: #3366ff;\">curve<\/span> ( <span style=\"color: #3366ff;\">pexp<\/span> (x, rate = 1.5), from=0, to=10, col=' <span style=\"color: #008000;\">purple<\/span> ', add= <span style=\"color: #008000;\">TRUE<\/span> )\n\n<span style=\"color: #3366ff;\"><span style=\"color: #008080;\">#add legend<\/span>\nlegend<\/span> (7, .9, legend=c(\" <span style=\"color: #008000;\">rate=.5<\/span> \", \" <span style=\"color: #008000;\">rate=1<\/span> \", \" <span style=\"color: #008000;\">rate=1.5<\/span> \"),\n       col=c(\" <span style=\"color: #008000;\">blue<\/span> \", \" <span style=\"color: #008000;\">red<\/span> \", \" <span style=\"color: #008000;\">purple<\/span> \"), lty=1, cex=1.2)<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14829 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/exp6.png\" alt=\"M\u00faltiplas distribui\u00e7\u00f5es exponenciais em um \u00fanico gr\u00e1fico em R\" width=\"430\" height=\"395\" 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 tra\u00e7ar outras distribui\u00e7\u00f5es de probabilidade em R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/grafico-de-distribuicao-de-peixes-r\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar uma distribui\u00e7\u00e3o de Poisson em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/tracar-a-distribuicao-binomial-r\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar uma distribui\u00e7\u00e3o binomial em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/plotar-distribuicao-t-r\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar a distribui\u00e7\u00e3o em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/tracar-a-distribuicao-normal-r\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar uma distribui\u00e7\u00e3o normal em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/tracar-a-distribuicao-qui-quadrado-em-r\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar uma distribui\u00e7\u00e3o qui-quadrado em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A distribui\u00e7\u00e3o exponencial \u00e9 uma distribui\u00e7\u00e3o de probabilidade usada para modelar o tempo que temos que esperar at\u00e9 que um determinado evento ocorra. Se uma vari\u00e1vel aleat\u00f3ria X segue uma distribui\u00e7\u00e3o exponencial, ent\u00e3o a fun\u00e7\u00e3o de densidade de probabilidade de X pode ser escrita: f (x; \u03bb) = \u03bbe -\u03bbx Ouro: \u03bb: o par\u00e2metro de [&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-1494","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 tra\u00e7ar uma distribui\u00e7\u00e3o exponencial em R - Statorials<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como tra\u00e7ar uma distribui\u00e7\u00e3o exponencial 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\/tracar-uma-distribuicao-exponencial-em-r\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como tra\u00e7ar uma distribui\u00e7\u00e3o exponencial em R - Statorials\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como tra\u00e7ar uma distribui\u00e7\u00e3o exponencial em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/tracar-uma-distribuicao-exponencial-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-26T04:07:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/exp3.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\/tracar-uma-distribuicao-exponencial-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/tracar-uma-distribuicao-exponencial-em-r\/\",\"name\":\"Como tra\u00e7ar uma distribui\u00e7\u00e3o exponencial em R - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-26T04:07:40+00:00\",\"dateModified\":\"2023-07-26T04:07:40+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como tra\u00e7ar uma distribui\u00e7\u00e3o exponencial em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/tracar-uma-distribuicao-exponencial-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/tracar-uma-distribuicao-exponencial-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/tracar-uma-distribuicao-exponencial-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como tra\u00e7ar uma distribui\u00e7\u00e3o exponencial 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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