{"id":2925,"date":"2023-07-20T01:49:40","date_gmt":"2023-07-20T01:49:40","guid":{"rendered":"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-matplotlib\/"},"modified":"2023-07-20T01:49:40","modified_gmt":"2023-07-20T01:49:40","slug":"histograma-de-frequencia-relativa-matplotlib","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-matplotlib\/","title":{"rendered":"Como criar um histograma de frequ\u00eancia relativa no matplotlib"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Um <a href=\"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-1\/\" target=\"_blank\" rel=\"noopener\">histograma de frequ\u00eancia relativa<\/a> \u00e9 um gr\u00e1fico que exibe as frequ\u00eancias relativas dos valores em um conjunto de dados.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte sintaxe para criar um histograma de frequ\u00eancia relativa no Matplotlib em Python:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt<\/span>\n<span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np<\/span>\n<\/span>\n<span style=\"color: #008080;\">#define plotting area\n<\/span>fig = plt. <span style=\"color: #3366ff;\">figure<\/span> ()\nax = fig. <span style=\"color: #3366ff;\">add_subplot<\/span> (111)\n\n<span style=\"color: #008080;\">#create relative frequency histogram\n<\/span>ax. <span style=\"color: #3366ff;\">hist<\/span> (data, edgecolor=' <span style=\"color: #ff0000;\">black<\/span> ', weights=np. <span style=\"color: #3366ff;\">ones_like<\/span> (data) \/ <span style=\"color: #008000;\">len<\/span> (data))<\/strong>\n<\/pre>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar essa sintaxe na pr\u00e1tica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo: Crie um histograma de frequ\u00eancia relativa no Matplotlib<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar um histograma de frequ\u00eancia regular no Matplotlib:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#define data values\n<\/span>data = [8, 8, 9, 12, 13, 13, 14, 14, 15, 18, 22, 23, 24, 25, 30]\n\n<span style=\"color: #008080;\">#create frequency histogram\n<\/span>fig = plt. <span style=\"color: #3366ff;\">figure<\/span> ()\nax = fig. <span style=\"color: #3366ff;\">add_subplot<\/span> (111)\nax. <span style=\"color: #3366ff;\">hist<\/span> (data, edgecolor=' <span style=\"color: #ff0000;\">black<\/span> ')<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-25439 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/refreq11.jpg\" alt=\"\" width=\"528\" height=\"355\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">O eixo x mostra os compartimentos para os valores dos dados e o eixo y mostra a frequ\u00eancia de cada compartimento.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Podemos usar o seguinte c\u00f3digo para exibir <strong>frequ\u00eancias relativas<\/strong> no eixo y:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#define data values\n<\/span>data = [8, 8, 9, 12, 13, 13, 14, 14, 15, 18, 22, 23, 24, 25, 30]\n\n<span style=\"color: #008080;\">#create relative frequency histogram\n<\/span>fig = plt. <span style=\"color: #3366ff;\">figure<\/span> ()\nax = fig. <span style=\"color: #3366ff;\">add_subplot<\/span> (111)\nax. <span style=\"color: #3366ff;\">hist<\/span> (data, edgecolor=' <span style=\"color: #ff0000;\">black<\/span> ', weights=np. <span style=\"color: #3366ff;\">ones_like<\/span> (data) \/ <span style=\"color: #008000;\">len<\/span> (data))<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-25440 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/refreq12.jpg\" alt=\"\" width=\"527\" height=\"342\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">O eixo y agora exibe frequ\u00eancias relativas.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, existem 15 valores totais no conjunto de dados.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Portanto, em vez de mostrar uma frequ\u00eancia de <strong>4<\/strong> no eixo y para a barra mais alta do gr\u00e1fico, o eixo y agora mostra 4\/15 = <strong>0,2667<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Tamb\u00e9m podemos usar a fun\u00e7\u00e3o <strong>PercentFormatter()<\/strong> do Matplotlib para exibir valores no eixo y como porcentagens:<\/span><b> <\/b><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"><span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">from<\/span> matplotlib. <span style=\"color: #3366ff;\">ticker<\/span> <span style=\"color: #008000;\">import<\/span> PercentFormatter\n\n<span style=\"color: #008080;\">#define data values\n<\/span>data = [8, 8, 9, 12, 13, 13, 14, 14, 15, 18, 22, 23, 24, 25, 30]\n\n<span style=\"color: #008080;\">#create relative frequency histogram with percentages on y-axis\n<\/span>fig = plt. <span style=\"color: #3366ff;\">figure<\/span> ()\nax = fig. <span style=\"color: #3366ff;\">add_subplot<\/span> (111)\nax. <span style=\"color: #3366ff;\">hist<\/span> (data, edgecolor=' <span style=\"color: #ff0000;\">black<\/span> ', weights=np. <span style=\"color: #3366ff;\">ones_like<\/span> (data)* <span style=\"color: #008000;\">100<\/span> \/ <span style=\"color: #008000;\">len<\/span> (data))\nax. <span style=\"color: #3366ff;\">yaxis<\/span> . <span style=\"color: #3366ff;\">set_major_formatter<\/span> (PercentFormatter())\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-25441\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/refreq13.jpg\" alt=\"Histograma de frequ\u00eancia relativa Matplotlib\" width=\"545\" height=\"348\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Observe que o eixo y agora exibe frequ\u00eancias relativas como porcentagens.<\/span><\/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 criar outros gr\u00e1ficos comuns no Matplotlib:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/histograma-de-cores-matplotlib\/\" target=\"_blank\" rel=\"noopener\">Como mudar a cor de um histograma Matplotlib<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/tamanho-do-compartimento-matplotlib\/\" target=\"_blank\" rel=\"noopener\">Como ajustar o tamanho do compartimento em histogramas Matplotlib<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/histograma-do-panda\/\" target=\"_blank\" rel=\"noopener\">Como criar um histograma a partir do Pandas DataFrame<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um histograma de frequ\u00eancia relativa \u00e9 um gr\u00e1fico que exibe as frequ\u00eancias relativas dos valores em um conjunto de dados. Voc\u00ea pode usar a seguinte sintaxe para criar um histograma de frequ\u00eancia relativa no Matplotlib em Python: import matplotlib. pyplot as plt import numpy as np #define plotting area fig = plt. figure () ax [&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-2925","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 criar um histograma de frequ\u00eancia relativa no Matplotlib - Statorials<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como criar um histograma de frequ\u00eancia relativa no Matplotlib, incluindo um exemplo completo.\" \/>\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\/histograma-de-frequencia-relativa-matplotlib\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como criar um histograma de frequ\u00eancia relativa no Matplotlib - Statorials\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como criar um histograma de frequ\u00eancia relativa no Matplotlib, incluindo um exemplo completo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-matplotlib\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-20T01:49:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/refreq11.jpg\" \/>\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\/histograma-de-frequencia-relativa-matplotlib\/\",\"url\":\"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-matplotlib\/\",\"name\":\"Como criar um histograma de frequ\u00eancia relativa no Matplotlib - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-20T01:49:40+00:00\",\"dateModified\":\"2023-07-20T01:49:40+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como criar um histograma de frequ\u00eancia relativa no Matplotlib, incluindo um exemplo completo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-matplotlib\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-matplotlib\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/histograma-de-frequencia-relativa-matplotlib\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como criar um histograma de frequ\u00eancia relativa no matplotlib\"}]},{\"@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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