{"id":10781,"date":"2025-07-15T13:34:50","date_gmt":"2025-07-15T13:34:50","guid":{"rendered":"https:\/\/functiontranslator.com\/dist-chiq\/"},"modified":"2021-02-25T17:15:11","modified_gmt":"2021-02-25T17:15:11","slug":"chisq-dist","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/pt-pt\/chisq-dist\/","title":{"rendered":"DIST.CHIQ"},"content":{"rendered":"<p>Nesta instru\u00e7\u00e3o, abordaremos a fun\u00e7\u00e3o DIST.CHIQ, dispon\u00edvel tanto no Microsoft Excel quanto no Google Planilhas. Essencial para an\u00e1lises estat\u00edsticas, essa fun\u00e7\u00e3o calcula a distribui\u00e7\u00e3o qui-quadrado, fundamental em testes de hip\u00f3teses e ajuste de modelos estat\u00edsticos.<\/p>\n<h2>Descri\u00e7\u00e3o e Sintaxe da Fun\u00e7\u00e3o<\/h2>\n<p>A fun\u00e7\u00e3o DIST.CHIQ calcula a densidade de probabilidade ou a probabilidade acumulada para uma dada distribui\u00e7\u00e3o qui-quadrado. \u00c9 especialmente \u00fatil em testes de hip\u00f3tese que aplicam essa distribui\u00e7\u00e3o.<\/p>\n<p>Para utilizar a fun\u00e7\u00e3o, a sintaxe \u00e9 a seguinte:<\/p>\n<ul>\n<li><strong>DIST.CHIQ(x; graus_de_liberdade; acumulado)<\/strong><\/li>\n<\/ul>\n<p>Os componentes desta fun\u00e7\u00e3o s\u00e3o:<\/p>\n<ul>\n<li><code>x<\/code> \u00e9 o valor para o c\u00e1lculo da fun\u00e7\u00e3o.<\/li>\n<li><code>graus_de_liberdade<\/code> s\u00e3o os graus de liberdade da distribui\u00e7\u00e3o qui-quadrado.<\/li>\n<li><code>acumulado<\/code> \u00e9 um argumento booleano que determina o tipo do resultado: se VERDADEIRO, a fun\u00e7\u00e3o retorna a probabilidade cumulativa; se FALSO, retorna a fun\u00e7\u00e3o de densidade de probabilidade.<\/li>\n<\/ul>\n<pre> <code>Exemplo de uso: =DIST.CHIQ(10; 8; VERDADEIRO) \/\/ Retorna a probabilidade cumulativa =DIST.CHIQ(10; 8; FALSO) \/\/ Retorna a fun\u00e7\u00e3o densidade de probabilidade <\/code> <\/pre>\n<h2>Aplica\u00e7\u00f5es Pr\u00e1ticas da Fun\u00e7\u00e3o<\/h2>\n<h2>Aplica\u00e7\u00e3o em Teste de Adequa\u00e7\u00e3o de Ajuste<\/h2>\n<p>Imagine que voc\u00ea deseja testar se um dado \u00e9 viciado ou n\u00e3o. Ap\u00f3s lan\u00e7ar o dado 60 vezes, voc\u00ea observa a frequ\u00eancia de cada face para comparar com as frequ\u00eancias esperadas, assumindo que o dado \u00e9 justo (cada face aparecendo 10 vezes).<\/p>\n<table>\n<thead>\n<tr>\n<th>Face<\/th>\n<th>Observado<\/th>\n<th>Esperado<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>5<\/td>\n<td>10<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>12<\/td>\n<td>10<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>8<\/td>\n<td>10<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>13<\/td>\n<td>10<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>18<\/td>\n<td>10<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>4<\/td>\n<td>10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre> <code>=SOMA((OBSERVADO - ESPERADO)^2 \/ ESPERADO) <\/code> <\/pre>\n<p>Ap\u00f3s calcular o valor qui-quadrado, aplique a fun\u00e7\u00e3o DIST.CHIQ para obter o p-valor:<\/p>\n<pre> <code>=DIST.CHIQ(15,14; 5; VERDADEIRO) <\/code> <\/pre>\n<p>Um p-valor abaixo do n\u00edvel de signific\u00e2ncia (usualmente 0,05) indica que o dado pode ser viciado.<\/p>\n<h2>An\u00e1lise de Independ\u00eancia em Tabelas de Conting\u00eancia<\/h2>\n<p>Considerando um estudo de mercado entre prefer\u00eancias de marcas entre homens e mulheres, voc\u00ea pode ter os seguintes dados coletados:<\/p>\n<table>\n<thead>\n<tr>\n<th>Marca<\/th>\n<th>Homens<\/th>\n<th>Mulheres<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A<\/td>\n<td>30<\/td>\n<td>70<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>70<\/td>\n<td>30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Com o qui-quadrado calculado, a fun\u00e7\u00e3o DIST.CHIQ ajuda a verificar se h\u00e1 uma diferen\u00e7a significativa nas prefer\u00eancias entre os g\u00eaneros.<\/p>\n<pre> <code>=DIST.CHIQ(calculado_qui_quadrado; 1; VERDADEIRO) <\/code> <\/pre>\n<p>Estes exemplos demonstram como a fun\u00e7\u00e3o DIST.CHIQ pode ser eficaz em an\u00e1lises estat\u00edsticas, oferecendo perspectivas valiosas a partir dos dados analisados.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Devolve a fun\u00e7\u00e3o de densidade de probabilidade beta cumulativa<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[442],"tags":[],"class_list":["post-10781","post","type-post","status-publish","format-standard","hentry","category-estatistica"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Fun\u00e7\u00e3o CHISQ.DIST (DIST.CHIQ) no Excel \u2013 como funciona, exemplos e sintaxe<\/title>\n<meta name=\"description\" content=\"Breve descri\u00e7\u00e3o da fun\u00e7\u00e3o CHISQ.DIST (DIST.CHIQ) do Excel. 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