{"id":10756,"date":"2025-07-15T13:34:50","date_gmt":"2025-07-15T13:34:50","guid":{"rendered":"https:\/\/functiontranslator.com\/distbeta\/"},"modified":"2021-02-25T17:14:12","modified_gmt":"2021-02-25T17:14:12","slug":"betadist","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/pt-pt\/betadist\/","title":{"rendered":"DISTBETA"},"content":{"rendered":"

Introdu\u00e7\u00e3o \u00e0 Distribui\u00e7\u00e3o Beta no Excel e Google Planilhas<\/h2>\n

A fun\u00e7\u00e3o DIST.BETA no Excel, anteriormente conhecida como BETADIST antes do Excel 2010, \u00e9 uma fun\u00e7\u00e3o estat\u00edstica que retorna a fun\u00e7\u00e3o de distribui\u00e7\u00e3o cumulativa da distribui\u00e7\u00e3o Beta. Essa fun\u00e7\u00e3o \u00e9 frequentemente utilizada em estat\u00edsticas para modelar eventos que s\u00e3o limitados por valores m\u00ednimos e m\u00e1ximos, os quais s\u00e3o normalizados entre 0 e 1.<\/p>\n

Sintaxe e Exemplos de Uso<\/h2>\n

A sintaxe para a fun\u00e7\u00e3o DIST.BETA no Excel \u00e9 a seguinte:<\/p>\n

 =DIST.BETA(x, alfa, beta, [A], [B]) <\/code><\/pre>\n
Os par\u00e2metros s\u00e3o definidos como:<\/p>\n
    \n
  • x<\/code> \u00e9 o valor para o qual a fun\u00e7\u00e3o de distribui\u00e7\u00e3o \u00e9 avaliada.<\/li>\n
  • alfa<\/code> \u00e9 o par\u00e2metro alfa da distribui\u00e7\u00e3o e deve ser um n\u00famero positivo.<\/li>\n
  • beta<\/code> \u00e9 o par\u00e2metro beta da distribui\u00e7\u00e3o e tamb\u00e9m deve ser um n\u00famero positivo.<\/li>\n
  • [A]<\/code> \u00e9 o limite inferior do intervalo de x, com um valor padr\u00e3o de 0.<\/li>\n
  • [B]<\/code> \u00e9 o limite superior do intervalo de x, com um valor padr\u00e3o de 1.<\/li>\n<\/ul>\n
    Exemplo 1:<\/strong> Para encontrar o valor da distribui\u00e7\u00e3o Beta para x=0.5, alfa=2 e beta=3:<\/p>\n
     =DIST.BETA(0.5, 2, 3) <\/code><\/pre>\n
    Este exemplo retorna a probabilidade cumulativa para x=0.5 em uma distribui\u00e7\u00e3o Beta com alfa=2 e beta=3, considerando os limites padr\u00f5es de 0 a 1.<\/p>\n
    Aplica\u00e7\u00f5es Pr\u00e1ticas<\/h2>\n
    Segue a descri\u00e7\u00e3o de dois cen\u00e1rios pr\u00e1ticos onde a fun\u00e7\u00e3o de distribui\u00e7\u00e3o Beta pode ser \u00fatil:<\/p>\n
    Caso de Uso 1: An\u00e1lise da Taxa de Sucesso de Um Projeto<\/h2>\n
    Imagine que voc\u00ea deseja calcular a probabilidade de sucesso de um projeto, cuja taxa de sucesso \u00e9 representada por uma distribui\u00e7\u00e3o Beta de par\u00e2metros alfa=5 e beta=3:<\/p>\n
     =DIST.BETA(0.7, 5, 3) <\/code><\/pre>\n
    Essa formula\u00e7\u00e3o ir\u00e1 retornar a probabilidade de o sucesso do projeto ser inferior ou igual a 70%.<\/p>\n
    Caso de Uso 2: Modelagem do Tempo de Conclus\u00e3o de Tarefa<\/h2>\n
    Considere uma tarefa cujo tempo de conclus\u00e3o \u00e9 descrito por uma distribui\u00e7\u00e3o Beta, com par\u00e2metros alfa=2 e beta=5, onde o tempo varia de 0 a 100 horas. Para calcular a probabilidade de concluir a tarefa em at\u00e9 40 horas:<\/p>\n
     =DIST.BETA(0.4, 2, 5, 0, 100) <\/code><\/pre>\n
    A fun\u00e7\u00e3o calcular\u00e1 a probabilidade de que o tempo para conclus\u00e3o da tarefa seja de no m\u00e1ximo 40 horas, considerando os limites especificados.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Devolve a fun\u00e7\u00e3o de distribui\u00e7\u00e3o cumulativa beta<\/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-10756","post","type-post","status-publish","format-standard","hentry","category-compatibilidade"],"acf":[],"yoast_head":"\nFun\u00e7\u00e3o BETADIST (DISTBETA) no Excel \u2013 como funciona, exemplos e sintaxe<\/title>\n<meta name=\"description\" content=\"Breve descri\u00e7\u00e3o da fun\u00e7\u00e3o BETADIST (DISTBETA) do Excel. 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