{"id":735,"date":"2023-07-28T22:37:03","date_gmt":"2023-07-28T22:37:03","guid":{"rendered":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/"},"modified":"2023-07-28T22:37:03","modified_gmt":"2023-07-28T22:37:03","slug":"calculadora-de-intervalo-de-confianca-de-desvio-padrao","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/","title":{"rendered":"Intervalo de confian\u00e7a para uma calculadora de desvio padr\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>.axis--y .domain {\n  display: none;\n}<\/p>\n<p>h1 {\ntext-align: center;\nfont-size: 50px;\nmargin-bottom: 0px;\nfont-family: 'Raleway', serif;\n}<\/p>\n<p>p {\ncolor: black;\nmargin-bottom: 15px;\nmargin-top: 15px;\nfont-family: 'Raleway', sans-serif;\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_calc {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\npadding-left: 100px;\n}<\/p>\n<p>#hr_top {\nwidth: 30%;\nmargin-bottom: 0px;\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, #words input, #words_calc input {\n    display: inline-block;\n    vertical-align: baseline;\n    width: 350px;\n    max-height: 35px;\n}<\/p>\n<p>    #buttonCalc {\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>    #buttonCalc:hover {\n      background-color: #f6f6f6;\n      border: 1px solid black;\n    }<\/p>\n<p>#words_intro {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\n}\n<\/style>\n<div id=\"words_intro\">Um <b>intervalo de confian\u00e7a para um desvio padr\u00e3o populacional<\/b> \u00e9 um intervalo de valores que provavelmente conter\u00e1 um desvio padr\u00e3o populacional com um certo n\u00edvel de confian\u00e7a.<\/div>\n<div id=\"words_intro\"> A f\u00f3rmula para calcular esse intervalo de confian\u00e7a \u00e9 a seguinte:<\/div>\n<div id=\"words_intro\"> Intervalo de confian\u00e7a = [\u221a(n-1)s <sup>2<\/sup> \/X <sup>2<\/sup> <sub>\u03b1\/2<\/sub> , \u221a(n-1)s <sup>2<\/sup> \/X <sup>2<\/sup> <sub>1-\u03b1\/2<\/sub> ]<\/div>\n<div id=\"words_intro\"> Ouro:<\/div>\n<div id=\"words_intro\">\n<ul>\n<li> n:tamanho da amostra<\/li>\n<li> s <sup>2<\/sup> : vari\u00e2ncia amostral<\/li>\n<li> X <sup>2<\/sup> : valor cr\u00edtico do qui quadrado com n-1 graus de liberdade<\/li>\n<\/ul>\n<\/div>\n<div id=\"words_intro\"> Para encontrar um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional, basta preencher as caixas abaixo e clicar no bot\u00e3o \u201cCalcular\u201d.<\/div>\n<div id=\"words\"> <label><b>n<\/b> (tamanho da amostra)<\/label><input type=\"number\" id=\"n\" value=\"27\"><\/div>\n<div id=\"words\"> <label><b>s<\/b> (desvio padr\u00e3o da amostra)<\/label><input type=\"number\" id=\"s\" value=\"6.43\"><\/div>\n<div id=\"words\"> <label>Um n\u00edvel de confian\u00e7a<\/label> <input type=\"number\" id=\"conf\" value=\".95\" min=\"0\" max=\"1\" step=\".01\"><\/div>\n<div id=\"words_calc\"><input type=\"button\" id=\"buttonCalc\" onclick=\"calc()\" value=\"Calculate\"><\/div>\n<div>\n<p style=\"text-align:center\"> IC <span id=\"confOut\">95<\/span> % = [ <span id=\"low\">5,0637<\/span> , <span id=\"high\">8,8119<\/span> ]<\/p>\n<\/div>\n<div id=\"words_intro\"> Voc\u00ea pode ter <span id=\"confOut2\">95<\/span> % de certeza de que o intervalo [ <span id=\"low2\">5,0637<\/span> , <span id=\"high2\">8,8119<\/span> ] cont\u00e9m o verdadeiro desvio padr\u00e3o da popula\u00e7\u00e3o.<\/div>\n<p><script><\/p>\n<p>function calc() {<\/p>\n<p>\/\/get input values\nvar n = +document.getElementById('n').value;\nvar s = +document.getElementById('s').value;\nvar conf = +document.getElementById('conf').value;<\/p>\n<p>var s2 = Math.pow(s,2);\nvar df = n-1;\nvar confUse = 1-conf;\nvar confOut = conf*100;<\/p>\n<p>var x2high = jStat.chisquare.inv(confUse\/2, df);\nvar x2low = jStat.chisquare.inv(1-(confUse\/2), df);<\/p>\n<p>\/\/calculate stuff\nvar low = Math.sqrt(df*s2\/x2low);\nvar high = Math.sqrt(df*s2\/x2high);<\/p>\n<p>\/\/output results\ndocument.getElementById('confOut').innerHTML = confOut;\ndocument.getElementById('confOut2').innerHTML = confOut;\ndocument.getElementById('low').innerHTML = low.toFixed(4);\ndocument.getElementById('low2').innerHTML = low.toFixed(4);\ndocument.getElementById('high').innerHTML = high.toFixed(4);\ndocument.getElementById('high2').innerHTML = high.toFixed(4);\n}<\/p>\n<p><\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional \u00e9 um intervalo de valores que provavelmente conter\u00e1 um desvio padr\u00e3o populacional com um certo n\u00edvel de confian\u00e7a. A f\u00f3rmula para calcular esse intervalo de confian\u00e7a \u00e9 a seguinte: Intervalo de confian\u00e7a = [\u221a(n-1)s 2 \/X 2 \u03b1\/2 , \u221a(n-1)s 2 \/X 2 1-\u03b1\/2 ] Ouro: [&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-735","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>Intervalo de confian\u00e7a para uma calculadora de desvio padr\u00e3o - Estatoriais<\/title>\n<meta name=\"description\" content=\"Esta calculadora encontra um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional, com base nas informa\u00e7\u00f5es fornecidas pelo usu\u00e1rio.\" \/>\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-intervalo-de-confianca-de-desvio-padrao\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Intervalo de confian\u00e7a para uma calculadora de desvio padr\u00e3o - Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Esta calculadora encontra um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional, com base nas informa\u00e7\u00f5es fornecidas pelo usu\u00e1rio.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-28T22:37:03+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-intervalo-de-confianca-de-desvio-padrao\/\",\"url\":\"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/\",\"name\":\"Intervalo de confian\u00e7a para uma calculadora de desvio padr\u00e3o - Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-28T22:37:03+00:00\",\"dateModified\":\"2023-07-28T22:37:03+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Esta calculadora encontra um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional, com base nas informa\u00e7\u00f5es fornecidas pelo usu\u00e1rio.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Intervalo de confian\u00e7a para uma calculadora de desvio padr\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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais\",\"sameAs\":[\"https:\/\/statorials.org\/pt\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Intervalo de confian\u00e7a para uma calculadora de desvio padr\u00e3o - Estatoriais","description":"Esta calculadora encontra um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional, com base nas informa\u00e7\u00f5es fornecidas pelo usu\u00e1rio.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/","og_locale":"pt_PT","og_type":"article","og_title":"Intervalo de confian\u00e7a para uma calculadora de desvio padr\u00e3o - Estatoriais","og_description":"Esta calculadora encontra um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional, com base nas informa\u00e7\u00f5es fornecidas pelo usu\u00e1rio.","og_url":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/","og_site_name":"Statorials","article_published_time":"2023-07-28T22:37:03+00:00","author":"Dr. benjamim anderson","twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"Dr. benjamim anderson","Tempo estimado de leitura":"1 minuto"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/","url":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/","name":"Intervalo de confian\u00e7a para uma calculadora de desvio padr\u00e3o - Estatoriais","isPartOf":{"@id":"https:\/\/statorials.org\/pt\/#website"},"datePublished":"2023-07-28T22:37:03+00:00","dateModified":"2023-07-28T22:37:03+00:00","author":{"@id":"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666"},"description":"Esta calculadora encontra um intervalo de confian\u00e7a para um desvio padr\u00e3o populacional, com base nas informa\u00e7\u00f5es fornecidas pelo usu\u00e1rio.","breadcrumb":{"@id":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/#breadcrumb"},"inLanguage":"pt-PT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/pt\/calculadora-de-intervalo-de-confianca-de-desvio-padrao\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Lar","item":"https:\/\/statorials.org\/pt\/"},{"@type":"ListItem","position":2,"name":"Intervalo de confian\u00e7a para uma calculadora de desvio padr\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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais","sameAs":["https:\/\/statorials.org\/pt"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/comments?post=735"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/735\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/media?parent=735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/categories?post=735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/tags?post=735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}