{"id":1173,"date":"2023-07-27T09:59:19","date_gmt":"2023-07-27T09:59:19","guid":{"rendered":"https:\/\/statorials.org\/pt\/percentis-em-python\/"},"modified":"2023-07-27T09:59:19","modified_gmt":"2023-07-27T09:59:19","slug":"percentis-em-python","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/percentis-em-python\/","title":{"rendered":"Como calcular percentis em python: com exemplos"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">O <sup>en\u00e9simo<\/sup> <strong>percentil<\/strong> de um conjunto de dados \u00e9 o valor que corta os <em>n<\/em> por cento superiores dos valores de dados quando todos os valores s\u00e3o classificados do menor para o maior.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, o 90\u00ba percentil de um conjunto de dados \u00e9 o valor que separa os 90% inferiores dos valores de dados dos 10% superiores dos valores de dados.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Podemos calcular percentis rapidamente em Python usando a fun\u00e7\u00e3o <a href=\"https:\/\/numpy.org\/doc\/stable\/reference\/generated\/numpy.percentile.html\" target=\"_blank\" rel=\"noopener noreferrer\">numpy.percentile()<\/a> , que usa a seguinte sintaxe:<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>numpy.percentil(a, q)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>a:<\/strong> Tabela de valores<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>q:<\/strong> Percentil ou sequ\u00eancia de percentis a calcular, que deve estar entre 0 e 100 inclusive.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Este tutorial explica como usar esta fun\u00e7\u00e3o para calcular percentis em Python.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Como encontrar os percentis de uma tabela<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir demonstra como encontrar percentis diferentes para um determinado array em Python:<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<\/span>#make this example reproducible\n<span style=\"color: #000000;\">n.p. <span style=\"color: #3366ff;\">random<\/span> . <span style=\"color: #3366ff;\">seeds<\/span> (0)<\/span>\n\n#create array of 100 random integers distributed between 0 and 500\n<\/span><span style=\"color: #000000;\">data = np. <span style=\"color: #3366ff;\">random<\/span> . <span style=\"color: #3366ff;\">randint<\/span> (0, 500, 100)\n\n<span style=\"color: #008080;\">#find the 37th percentile of the array<\/span>\nn.p. <span style=\"color: #3366ff;\">percentile<\/span> (data, 37)\n\n173.26\n<\/span>\n<span style=\"color: #008080;\">#Find the quartiles (25th, 50th, and 75th percentiles) of the array\n<\/span>n.p. <span style=\"color: #3366ff;\">percentile<\/span> (data, [25, 50, 75])\n\narray([116.5, 243.5, 371.5])\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Como encontrar percentis de uma coluna DataFrame<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como encontrar o valor do 95\u00ba percentil para uma \u00fanica coluna DataFrame do pandas:<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #800080;\"><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np \n<\/span><\/span><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd<\/span>\n\n<span style=\"color: #008080;\">#createDataFrame\n<\/span><span style=\"color: #000000;\">df = pd.DataFrame({'var1': [25, 12, 15, 14, 19, 23, 25, 29, 33, 35],\n                   'var2': [5, 7, 7, 9, 12, 9, 9, 4, 14, 15],\n                   'var3': [11, 8, 10, 6, 6, 5, 9, 12, 13, 16]})<\/span>\n\n<span style=\"color: #008080;\">#find 90th percentile of var1 column\n<\/span><span style=\"color: #000000;\">n.p. <span style=\"color: #3366ff;\">percentile<\/span> (df. <span style=\"color: #3366ff;\">var1<\/span> , 95)\n\n34.1\n<\/span><\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Como encontrar percentis de m\u00faltiplas colunas do DataFrame<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como encontrar o valor do 95\u00ba percentil para v\u00e1rias colunas em um DataFrame do pandas:<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #800080;\"><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np \n<\/span><\/span><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd<\/span>\n\n<span style=\"color: #008080;\">#createDataFrame\n<\/span><span style=\"color: #000000;\">df = pd.DataFrame({'var1': [25, 12, 15, 14, 19, 23, 25, 29, 33, 35],\n                   'var2': [5, 7, 7, 9, 12, 9, 9, 4, 14, 15],\n                   'var3': [11, 8, 10, 6, 6, 5, 9, 12, 13, 16]})<\/span>\n\n<span style=\"color: #008080;\">#find 95th percentile of each column\n<\/span><span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">quantile<\/span> (.95)\n\nvar1 34.10\nvar2 14.55\nvar3 14.65\n\n<span style=\"color: #008080;\">#find 95th percentile of just columns var1 and var2<\/span>\ndf[[' <span style=\"color: #008000;\">var1<\/span> ', ' <span style=\"color: #008000;\">var2<\/span> ']]. <span style=\"color: #3366ff;\">quantile<\/span> (.95)\n\nvar1 34.10\nvar2 14.55<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que pudemos usar a fun\u00e7\u00e3o pandas <a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/reference\/api\/pandas.DataFrame.quantile.html\" target=\"_blank\" rel=\"noopener noreferrer\">quantile()<\/a> nos exemplos acima para calcular percentis.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Relacionado:<\/strong> <a href=\"https:\/\/statorials.org\/pt\/percentis-em-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como calcular percentis em R (com exemplos)<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O en\u00e9simo percentil de um conjunto de dados \u00e9 o valor que corta os n por cento superiores dos valores de dados quando todos os valores s\u00e3o classificados do menor para o maior. Por exemplo, o 90\u00ba percentil de um conjunto de dados \u00e9 o valor que separa os 90% inferiores dos valores de dados [&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-1173","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 percentis em Python (com exemplos) - Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como calcular percentis em Python, 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\/percentis-em-python\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como calcular percentis em Python (com exemplos) - Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como calcular percentis em Python, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/percentis-em-python\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T09:59:19+00:00\" \/>\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\/percentis-em-python\/\",\"url\":\"https:\/\/statorials.org\/pt\/percentis-em-python\/\",\"name\":\"Como calcular percentis em Python (com exemplos) - Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-27T09:59:19+00:00\",\"dateModified\":\"2023-07-27T09:59:19+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como calcular percentis em Python, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/percentis-em-python\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/percentis-em-python\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/percentis-em-python\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como calcular percentis em python: 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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