{"id":515,"date":"2023-07-29T15:49:51","date_gmt":"2023-07-29T15:49:51","guid":{"rendered":"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/"},"modified":"2023-07-29T15:49:51","modified_gmt":"2023-07-29T15:49:51","slug":"calculadora-de-regra-de-decisao","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/","title":{"rendered":"Calculadora de regras de decis\u00e3o"},"content":{"rendered":"<p><script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/mathjs\/5.1.1\/math.js\"><\/script><script src=\"https:\/\/cdn.jsdelivr.net\/npm\/jstat@latest\/dist\/jstat.min.js\"><\/script><\/p>\n<style>\n@import url('https:\/\/fonts.googleapis.com\/css?family=Droid+Serif|Raleway');<\/p>\n<p>h1 {\ncolor: black;\ntext-align: center;\nmargin-top: 15px;\nmargin-bottom: 0px;\nfont-family: 'Raleway', sans-serif;\n}<\/p>\n<p>h2 {\ncolor: black;\nfont-size: 20px;\ntext-align: center;\nmargin-bottom: 15px;\nmargin-top: 15px;\nfont-family: 'Raleway', sans-serif;\n}<\/p>\n<p>p {\ncolor: black;\ntext-align: center;\nmargin-bottom: 15px;\nmargin-top: 15px;\nfont-family: 'Raleway', sans-serif;\n}<\/p>\n<p>#words_intro {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\n}<\/p>\n<p>#words_outro {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\n}<\/p>\n<p>#words {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\npadding-left: 100px;\n}<\/p>\n<p>#words_t {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\npadding-left: 100px;\n}<\/p>\n<p>#calcTitle {\ntext-align: center;\nfont-size: 20px;\nmargin-bottom: 0px;\nfont-family: 'Raleway', serif;\n}<\/p>\n<p>#hr_top {\nwidth: 30%;\nmargin-bottom: 0px;\nmargin-top: 10px;\nborder: none;\nheight: 2px;\ncolor: black;\nbackground-color: black;\n}<\/p>\n<p>#hr_bottom {\nwidth: 30%;\nmargin-top: 15px;\nborder: none;\nheight: 2px;\ncolor: black;\nbackground-color: black;\n}<\/p>\n<p>#words label, input {\n    display: inline-block;\n    vertical-align: baseline;\n    width: 350px;\n}<\/p>\n<p>.input_label_calc {\n    display: inline-block;\n    vertical-align: baseline;\n    width: 350px;\n}<\/p>\n<p>    #button_calc {\n      border: 1px solid;\n      border-radius: 10px;\n      margin-top: 20px;\n      padding: 10px 10px;\n      cursor: pointer;\n      outline: none;\n      background-color: white;\n      color: black;\n      font-family: 'Work Sans', sans-serif;\n      border: 1px solid grey;\n      \/* Green *\/\n    }<\/p>\n<p>    #button_calc:hover {\n      background-color: #f6f6f6;\n      border: 1px solid black;\n    }<\/p>\n<p>\t    .label_radio {\n\ttext-align: center;\n}\n<\/style>\n<div id=\"words_intro\">No <a href=\"https:\/\/statorials.org\/pt\/estatologia-explica-conceitos-de-forma-simples-e-direta-facilitamos-o-aprendizado-de-estatistica\/\" target=\"_blank\" rel=\"noopener\">teste de hip\u00f3teses<\/a> , queremos saber se devemos ou n\u00e3o rejeitar uma hip\u00f3tese estat\u00edstica.<\/div>\n<div id=\"words_intro\"> Para tomar essa decis\u00e3o, comparamos o valor p da estat\u00edstica de teste com um n\u00edvel de signific\u00e2ncia que escolhemos usar para o teste. Se o valor p for menor que o n\u00edvel de signific\u00e2ncia, rejeitamos a hip\u00f3tese nula. Caso contr\u00e1rio, n\u00e3o conseguiremos rejeitar a hip\u00f3tese nula.<\/div>\n<div id=\"words_intro\"> Esta calculadora informa se voc\u00ea deve ou n\u00e3o rejeitar uma hip\u00f3tese nula com base no valor da estat\u00edstica de teste, no formato do teste (unilateral ou bicaudal) e no n\u00edvel de signific\u00e2ncia que voc\u00ea escolheu usar.<\/div>\n<div id=\"words\">\n<p style=\"text-align: left\"> <b>Hip\u00f3tese unilateral ou bilateral?<\/b><\/p>\n<p> <label class=\"label_radio\" for=\"one_tailed\">Unilateral<\/label><input type=\"radio\" id=\"one_tailed\" name=\"tails\"> <label class=\"label_radio\" for=\"two_tailed\">Bicaudal<\/label> <input type=\"radio\" id=\"two_tailed\" name=\"tails\" checked=\"\"><\/p>\n<\/div>\n<div id=\"words\">\n<p style=\"text-align: left\"> <b>N\u00edvel de signific\u00e2ncia<\/b><\/p>\n<p> <label class=\"label_radio\" for=\"one\">0,01<\/label><input type=\"radio\" id=\"one\" name=\"sig\" value=\"0.01\"> <label class=\"label_radio\" for=\"five\">0,05<\/label><input type=\"radio\" id=\"five\" name=\"sig\" value=\"0.05\" checked=\"\"> <label class=\"label_radio\" for=\"ten\">0,10<\/label> <input type=\"radio\" id=\"ten\" name=\"sig\" value=\"0.10\"><\/p>\n<\/div>\n<div id=\"words\">\n<p style=\"text-align: left\"> <b>Estat\u00edstica Z ou estat\u00edstica T?<\/b><\/p>\n<p> <label class=\"label_radio\" for=\"z\">Estat\u00edstica Z<\/label><input type=\"radio\" id=\"z\" name=\"test_stats\" onclick=\"dataOption()\" checked=\"\"> <label class=\"label_radio\" for=\"t\">estat\u00edstica t<\/label><input type=\"radio\" id=\"t\" name=\"test_stats\" onclick=\"dataOption()\"><\/p>\n<\/div>\n<div id=\"words_t\"> <label class=\"input_label_calc\" for=\"dof\"><b>Graus de liberdade<\/b><\/label><input class=\"input_label_calc\" type=\"number\" id=\"dof\" value=\"17\"><\/div>\n<div id=\"words\"><label class=\"input_label_calc\" for=\"stat\"><b>Valor da estat\u00edstica de teste<\/b><\/label> <input class=\"input_label_calc\" type=\"number\" id=\"stat\" value=\"1.34\"><\/div>\n<div id=\"words\"><input class=\"input_label_calc\" type=\"button\" id=\"button_calc\" onclick=\"calc()\" value=\"Find Decision Rule\"><\/div>\n<div id=\"words_outro\">\n<p> Regra de decis\u00e3o: <b><span id=\"decision\">n\u00e3o rejeite a hip\u00f3tese nula<\/span><\/b><\/p>\n<\/div>\n<hr>\n<div id=\"words_outro\">\n<p> <b>Explica\u00e7\u00e3o:<\/b><\/p>\n<\/div>\n<div id=\"words_intro\">\n<p> O valor p para uma <span id=\"test_output_name\">estat\u00edstica Z<\/span> de <span id=\"test_output\">1,34<\/span> para um teste <span id=\"test_output_tail\">bicaudal<\/span> \u00e9 <b><span id=\"p_output\">0,18025<\/span><\/b> . Como esse valor p \u00e9 <span id=\"test_output_sign\">maior que<\/span> <span id=\"test_output_sig\">0,05<\/span> , <b><span id=\"test_output_decision\">n\u00e3o conseguimos rejeitar a hip\u00f3tese nula<\/span><\/b> .<\/p>\n<\/div>\n<p><script>\n\/\/create function that shows or hides elements based on button click\nvar div_table = document.getElementById('words_t');\ndiv_table.style.display = 'none';\nfunction dataOption() {\n    if (document.getElementById('t').checked) {\n\tdiv_table.style.display = 'block';\n       } else {\n\tdiv_table.style.display = 'none';\n      }\n}<\/p>\n<p>function calc() {\t\n\/\/get test statistic\nvar input_test_stat = document.getElementById('stat').value*1;\nvar dof = document.getElementById('dof').value*1;<\/p>\n<p>\/\/get tails input\nvar input_tails = 1;\nvar output_tail = 'one-tailed';\nif (document.getElementById('two_tailed').checked) {\n  input_tails = 2;\n  output_tail = 'two-tailed';\n}\t<\/p>\n<p>\/\/get significance level input\nvar input_sig = 0;\nif (document.getElementById('one').checked) {\n  sig_level = 0.01;\n} else if (document.getElementById('five').checked) {\n  sig_level = 0.05;\n} else {\n  sig_level = 0.10;\n}<\/p>\n<p>\/\/compute p-value\nvar p_output = jStat.normal.cdf(Math.abs(input_test_stat), 0, 1)*input_tails;\nvar input_test_name = 'Z-statistic';<\/p>\n<p>if (document.getElementById('t').checked) {\n  p_output = jStat.studentt.cdf(Math.abs(input_test_stat), dof)*input_tails;\n  var input_test_name = 't-statistic';\n}<\/p>\n<p>if (p_output >= 1) {\n  p_output = 2 - p_output;\n}<\/p>\n<p>\/\/last correction for one-tailed\nif (input_tails == 1) {\n  p_output = 1 - p_output;\n}\t\t<\/p>\n<p>\/\/compute decision rule\nvar test_output_sign = 'greater than';\nvar test_output_decision = 'fail to reject the null hypothesis';<\/p>\n<p>if (p_output < sig_level) {\nvar test_output_sign = 'less than';\nvar test_output_decision = 'reject the null hypothesis';}\n\n\/\/output\ndocument.getElementById('p_output').innerHTML = p_output.toFixed(5);\ndocument.getElementById('test_output_name').innerHTML = input_test_name;\ndocument.getElementById('test_output').innerHTML = input_test_stat;\ndocument.getElementById('test_output_tail').innerHTML = output_tail;\ndocument.getElementById('test_output_sign').innerHTML = test_output_sign;\ndocument.getElementById('test_output_sig').innerHTML = sig_level;\ndocument.getElementById('test_output_decision').innerHTML = test_output_decision;\ndocument.getElementById('decision').innerHTML = test_output_decision;\n}\n\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>No teste de hip\u00f3teses , queremos saber se devemos ou n\u00e3o rejeitar uma hip\u00f3tese estat\u00edstica. Para tomar essa decis\u00e3o, comparamos o valor p da estat\u00edstica de teste com um n\u00edvel de signific\u00e2ncia que escolhemos usar para o teste. Se o valor p for menor que o n\u00edvel de signific\u00e2ncia, rejeitamos a hip\u00f3tese nula. Caso contr\u00e1rio, [&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-515","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>Calculadora de regras de decis\u00e3o - estatoriais<\/title>\n<meta name=\"description\" content=\"Esta calculadora informa qual regra de decis\u00e3o est\u00e1 correta em um teste de hip\u00f3tese.\" \/>\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\/calculadora-de-regra-de-decisao\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Calculadora de regras de decis\u00e3o - estatoriais\" \/>\n<meta property=\"og:description\" content=\"Esta calculadora informa qual regra de decis\u00e3o est\u00e1 correta em um teste de hip\u00f3tese.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-29T15:49:51+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=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/\",\"url\":\"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/\",\"name\":\"Calculadora de regras de decis\u00e3o - estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-29T15:49:51+00:00\",\"dateModified\":\"2023-07-29T15:49:51+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Esta calculadora informa qual regra de decis\u00e3o est\u00e1 correta em um teste de hip\u00f3tese.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/calculadora-de-regra-de-decisao\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculadora de regras de decis\u00e3o\"}]},{\"@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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