{"id":10883,"date":"2025-07-15T13:34:50","date_gmt":"2025-07-15T13:34:50","guid":{"rendered":"https:\/\/functiontranslator.com\/distf\/"},"modified":"2021-02-25T17:19:01","modified_gmt":"2021-02-25T17:19:01","slug":"fdist","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/pt-pt\/fdist\/","title":{"rendered":"DISTF"},"content":{"rendered":"<h2>Introdu\u00e7\u00e3o \u00e0 Fun\u00e7\u00e3o DISTF<\/h2>\n<p>A fun\u00e7\u00e3o DISTF no Microsoft Excel e a fun\u00e7\u00e3o FDIST no Google Planilhas s\u00e3o utilizadas para calcular a probabilidade de um valor em uma distribui\u00e7\u00e3o F em alcan\u00e7ar ou exceder um determinado valor cr\u00edtico. A distribui\u00e7\u00e3o F \u00e9 frequentemente empregada em testes de hip\u00f3teses estat\u00edsticos, notavelmente na an\u00e1lise de vari\u00e2ncia (ANOVA).<\/p>\n<h2>Sintaxe e Exemplos de Uso<\/h2>\n<p>A sintaxe para a fun\u00e7\u00e3o DISTF no Excel \u00e9:<\/p>\n<pre><code>DISTF(x, graus_de_liberdade1, graus_de_liberdade2, cumulativa)<\/code><\/pre>\n<p>onde:<\/p>\n<ul>\n<li><code>x<\/code> &#8211; \u00e9 o valor a ser testado pela fun\u00e7\u00e3o.<\/li>\n<li><code>graus_de_liberdade1<\/code> &#8211; indica o n\u00famero de graus de liberdade no numerador.<\/li>\n<li><code>graus_de_liberdade2<\/code> &#8211; indica o n\u00famero de graus de liberdade no denominador.<\/li>\n<li><code>cumulativa<\/code> &#8211; um valor l\u00f3gico que define o tipo de fun\u00e7\u00e3o: se TRUE, a fun\u00e7\u00e3o retorna a probabilidade cumulativa; se FALSE, retorna a densidade da probabilidade.<\/li>\n<\/ul>\n<p>Exemplo no Excel:<\/p>\n<pre><code>=DISTF(4, 15, 10, VERDADEIRO)<\/code><\/pre>\n<p>Este exemplo calcula a probabilidade cumulativa da distribui\u00e7\u00e3o F com x igual a 4, 15 graus de liberdade no numerador e 10 no denominador.<\/p>\n<p>Exemplo nas Google Planilhas:<\/p>\n<pre><code>=FDIST(4, 15, 10, TRUE)<\/code><\/pre>\n<p>Funciona de maneira similar ao Excel, por\u00e9m adaptada para a sintaxe do Google Planilhas.<\/p>\n<h2>Aplica\u00e7\u00f5es Pr\u00e1ticas<\/h2>\n<p>Neste segmento, exploraremos como a fun\u00e7\u00e3o pode ser aplicada em contextos pr\u00e1ticos.<\/p>\n<h2>Teste de Hip\u00f3teses em ANOVA<\/h2>\n<p>Considere um pesquisador que deseja verificar se tr\u00eas diferentes tipos de plantas apresentam o mesmo crescimento m\u00e9dio. A an\u00e1lise de vari\u00e2ncia (ANOVA) \u00e9 capaz de ajudar a determinar se as m\u00e9dias de tr\u00eas ou mais grupos diferem estatisticamente entre si.<\/p>\n<p>Ap\u00f3s realizar a ANOVA, o pesquisador obt\u00e9m um valor F e deve compar\u00e1-lo com um valor cr\u00edtico da distribui\u00e7\u00e3o F. Suponha que o valor F calculado seja 3.2, com 2 e 30 graus de liberdade, respectivamente.<\/p>\n<pre><code>=DISTF(3.2, 2, 30, VERDADEIRO)<\/code><\/pre>\n<p>Esta f\u00f3rmula calcula a probabilidade de obter um valor t\u00e3o extremo quanto o valor F calculado, auxiliando na decis\u00e3o sobre a rejei\u00e7\u00e3o ou n\u00e3o da hip\u00f3tese nula.<\/p>\n<h2>An\u00e1lise de Regress\u00e3o<\/h2>\n<p>Na an\u00e1lise de regress\u00e3o, a fun\u00e7\u00e3o DISTF pode ser usada para determinar a signific\u00e2ncia da regress\u00e3o como um todo. Se o valor p calculado for menor que o n\u00edvel de signific\u00e2ncia estabelecido (por exemplo, 0.05), conclui-se que pelo menos um dos coeficientes de regress\u00e3o difere significativamente de zero.<\/p>\n<p>Considere um valor F de 5.1 com 3 e 20 graus de liberdade na an\u00e1lise.<\/p>\n<pre><code>=DISTF(5.1, 3, 20, VERDADEIRO)<\/code><\/pre>\n<p>O resultado indica o valor p, que ajuda a determinar a signific\u00e2ncia dos resultados da regress\u00e3o.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Devolve a distribui\u00e7\u00e3o da probabilidade F<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[444],"tags":[],"class_list":["post-10883","post","type-post","status-publish","format-standard","hentry","category-compatibilidade"],"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 FDIST (DISTF) no Excel \u2013 como funciona, exemplos e sintaxe<\/title>\n<meta name=\"description\" content=\"Breve descri\u00e7\u00e3o da fun\u00e7\u00e3o FDIST (DISTF) do Excel. 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