{"id":4572,"date":"2023-07-10T00:29:31","date_gmt":"2023-07-10T00:29:31","guid":{"rendered":"https:\/\/statorials.org\/pt\/sas-nmiss\/"},"modified":"2023-07-10T00:29:31","modified_gmt":"2023-07-10T00:29:31","slug":"sas-nmiss","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/sas-nmiss\/","title":{"rendered":"Como usar a fun\u00e7\u00e3o nmiss no sas (com exemplo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a fun\u00e7\u00e3o <b>NMISS<\/b> no SAS para contar o n\u00famero de valores ausentes para cada vari\u00e1vel num\u00e9rica em um conjunto de dados.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Esta \u00e9 uma maneira comum de usar esta fun\u00e7\u00e3o na pr\u00e1tica:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\">proc means<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data <span style=\"color: #3366ff;\">nmiss<\/span> ;\n<span style=\"color: #800080;\">run<\/span> ;\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Este exemplo espec\u00edfico contar\u00e1 o n\u00famero de valores ausentes para cada vari\u00e1vel num\u00e9rica no conjunto de dados chamado <strong>my_data<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar <strong>o NMIS<\/strong> na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo: Use NMISS no SAS para contar o n\u00famero de valores ausentes para cada vari\u00e1vel num\u00e9rica<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Digamos que temos o seguinte conjunto de dados no SAS chamado <strong>my_data<\/strong> , que cont\u00e9m informa\u00e7\u00f5es sobre v\u00e1rios jogadores de basquete:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*create dataset*\/\n<\/span><span style=\"color: #800080;\">data<\/span> my_data;\n    <span style=\"color: #3366ff;\">input<\/span> team $ points assists rebounds;\n    <span style=\"color: #3366ff;\">datalines<\/span> ;\nAt 10 2 .\nAt 17 5.\nAt 17. .\nAt 18 3 4\nAt 15 0 5\nB. 4 5\nB 29 0 8\nB. 2 9\nC 12 1 9\n. 30 1 .\n;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view dataset*\/\n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35690 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/nmiss1.png\" alt=\"\" width=\"323\" height=\"302\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Observe que existem valores ausentes para cada vari\u00e1vel no conjunto de dados.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Podemos usar a fun\u00e7\u00e3o <strong>NMISS<\/strong> para contar o n\u00famero de valores faltantes em cada vari\u00e1vel:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*count number of missing values in each variable*\/<\/span>\n<span style=\"color: #000000;\"><span style=\"color: #800080;\">proc means<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data <span style=\"color: #3366ff;\">nmiss<\/span> ;\n<span style=\"color: #800080;\">run<\/span> ;<\/span><\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-35691\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/nmiss2.png\" alt=\"Fun\u00e7\u00e3o NMISS no exemplo SAS\" width=\"178\" height=\"130\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Na tabela de sa\u00edda podemos ver:<\/span><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">A vari\u00e1vel <strong>points<\/strong> possui <strong>2<\/strong> valores ausentes.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><span style=\"color: #000000;\">A vari\u00e1vel <strong>auxiliar<\/strong> tem <strong>1<\/strong> valor ausente.<\/span><\/span><\/li>\n<li> <span style=\"color: #000000;\">A vari\u00e1vel <strong>bounces<\/strong> possui <strong>4<\/strong> valores ausentes.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">E assim por diante.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por padr\u00e3o, a fun\u00e7\u00e3o <strong>NMISS<\/strong> n\u00e3o conta o n\u00famero de valores ausentes para vari\u00e1veis de caracteres em um conjunto de dados.<\/span><\/p>\n<p> <span style=\"color: #000000;\">No entanto, podemos usar a seguinte solu\u00e7\u00e3o alternativa com <strong>PROC SQL<\/strong> para contar o n\u00famero de valores ausentes para a vari\u00e1vel de caractere chamada <strong>team<\/strong> :<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*count number of missing values for team variable*\/<\/span>\n<span style=\"color: #000000;\"><span style=\"color: #800080;\">proc sql<\/span> ; \n    <span style=\"color: #3366ff;\">select<\/span> nmiss(team) <span style=\"color: #3366ff;\">as<\/span> missing_team_values\n    <span style=\"color: #3366ff;\">from<\/span> my_data;\n<span style=\"color: #800080;\">quit<\/span> ;<\/span><\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35692 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/nmiss3.png\" alt=\"\" width=\"169\" height=\"65\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Pelo resultado, podemos ver que falta <strong>1<\/strong> valor na coluna <strong>da equipe<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Observa\u00e7\u00e3o<\/strong> : voc\u00ea pode encontrar a documenta\u00e7\u00e3o completa do recurso SAS <strong>NMIS<\/strong> <a href=\"https:\/\/documentation.sas.com\/doc\/en\/pgmsascdc\/9.4_3.5\/ds2ref\/p11zbj0wkj0q7ln17xhx05s64a7h.htm\" target=\"_blank\" rel=\"noopener\">aqui<\/a> .<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como executar outras tarefas comuns no SAS:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/sas-contagem-de-valores-ausentes\/\" target=\"_blank\" rel=\"noopener\">Como contar valores ausentes no SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/sas-remove-linhas-com-valores-ausentes\/\" target=\"_blank\" rel=\"noopener\">Como excluir linhas com valores ausentes no SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/sem-substituir-valores-ausentes-por-zero\/\" target=\"_blank\" rel=\"noopener\">Como substituir valores ausentes por zero no SAS<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a fun\u00e7\u00e3o NMISS no SAS para contar o n\u00famero de valores ausentes para cada vari\u00e1vel num\u00e9rica em um conjunto de dados. Esta \u00e9 uma maneira comum de usar esta fun\u00e7\u00e3o na pr\u00e1tica: proc means data =my_data nmiss ; run ; Este exemplo espec\u00edfico contar\u00e1 o n\u00famero de valores ausentes para cada vari\u00e1vel [&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-4572","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 fun\u00e7\u00e3o NMISS no SAS (com exemplo) - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o NMISS no SAS para contar o n\u00famero de valores ausentes em um conjunto de dados, com um exemplo.\" \/>\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\/sas-nmiss\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como usar a fun\u00e7\u00e3o NMISS no SAS (com exemplo) - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o NMISS no SAS para contar o n\u00famero de valores ausentes em um conjunto de dados, com um exemplo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/sas-nmiss\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-10T00:29:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/nmiss1.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\/sas-nmiss\/\",\"url\":\"https:\/\/statorials.org\/pt\/sas-nmiss\/\",\"name\":\"Como usar a fun\u00e7\u00e3o NMISS no SAS (com exemplo) - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-10T00:29:31+00:00\",\"dateModified\":\"2023-07-10T00:29:31+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar a fun\u00e7\u00e3o NMISS no SAS para contar o n\u00famero de valores ausentes em um conjunto de dados, com um exemplo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/sas-nmiss\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/sas-nmiss\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/sas-nmiss\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar a fun\u00e7\u00e3o nmiss no sas (com exemplo)\"}]},{\"@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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