{"id":10758,"date":"2025-07-15T13:34:50","date_gmt":"2025-07-15T13:34:50","guid":{"rendered":"https:\/\/functiontranslator.com\/beta-acum-inv\/"},"modified":"2021-02-25T17:14:16","modified_gmt":"2021-02-25T17:14:16","slug":"betainv","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/pt-pt\/betainv\/","title":{"rendered":"BETA.ACUM.INV"},"content":{"rendered":"<p>A fun\u00e7\u00e3o BETAINV (no Excel) ou BETA.ACUM.INV (no Google Planilhas) \u00e9 uma ferramenta essencial em estat\u00edsticas para calcular o inverso da distribui\u00e7\u00e3o acumulada beta. Esta distribui\u00e7\u00e3o \u00e9 comumente aplicada em pesquisas relacionadas a propor\u00e7\u00f5es e taxas limitadas entre 0 e 1.<\/p>\n<h2>Entendendo a Fun\u00e7\u00e3o<\/h2>\n<p>Essa fun\u00e7\u00e3o \u00e9 utilizada para determinar o valor correspondente a uma probabilidade acumulada espec\u00edfica em uma distribui\u00e7\u00e3o beta. Para seu funcionamento, s\u00e3o necess\u00e1rios tr\u00eas par\u00e2metros essenciais:<\/p>\n<ul>\n<li><strong>probabilidade<\/strong>: A probabilidade acumulada, necessita estar no intervalo de 0 a 1.<\/li>\n<li><strong>alpha<\/strong>: Par\u00e2metro alpha da distribui\u00e7\u00e3o beta, que deve ser positivo.<\/li>\n<li><strong>beta<\/strong>: Par\u00e2metro beta da distribui\u00e7\u00e3o beta, que tamb\u00e9m deve ser superior a zero.<\/li>\n<\/ul>\n<p>Exemplo de aplica\u00e7\u00e3o da fun\u00e7\u00e3o:<\/p>\n<pre><code>=BETAINV(0.5, 2, 5) \/\/ Excel =BETA.ACUM.INV(0.5, 2, 5) \/\/ Google Planilhas <\/code><\/pre>\n<p>Este exemplo calcula a mediana de uma distribui\u00e7\u00e3o beta com alpha = 2 e beta = 5.<\/p>\n<h2>Aplica\u00e7\u00f5es Pr\u00e1ticas<\/h2>\n<p>Vejamos algumas aplica\u00e7\u00f5es pr\u00e1ticas desta fun\u00e7\u00e3o com exemplos espec\u00edficos.<\/p>\n<h2>Decis\u00f5es de Investimento em Startups<\/h2>\n<p>Um investidor est\u00e1 analisando a taxa de sucesso de startups em um setor espec\u00edfico. Com base em dados hist\u00f3ricos, ele sabe que essa taxa segue uma distribui\u00e7\u00e3o beta com par\u00e2metros alpha = 2 e beta = 3. Ele deseja descobrir a taxa de sucesso que est\u00e1 acima de 90% das startups.<\/p>\n<pre><code>=BETAINV(0.9, 2, 3) \/\/ Excel =BETA.ACUM.INV(0.9, 2, 3) \/\/ Google Planilhas <\/code><\/pre>\n<p>Utilizando a fun\u00e7\u00e3o, o investidor pode concluir que cerca de 78% \u00e9 a taxa de sucesso que excede 90% das outras startups.<\/p>\n<h2>An\u00e1lise de Resultados de Testes<\/h2>\n<p>Em um estudo cl\u00ednico, est\u00e1 sendo avaliada a efic\u00e1cia de um novo medicamento e os resultados preliminares demonstram uma distribui\u00e7\u00e3o beta das taxas de efic\u00e1cia com alpha = 5 e beta = 1. Os pesquisadores desejam saber qual \u00e9 o n\u00edvel de efic\u00e1cia que se encontra no percentil 95.<\/p>\n<pre><code>=BETAINV(0.95, 5, 1) \/\/ Excel =BETA.ACUM.INV(0.95, 5, 1) \/\/ Google Planilhas <\/code><\/pre>\n<p>A fun\u00e7\u00e3o indica que uma efic\u00e1cia de aproximadamente 99,3% encontra-se no percentil 95, sugerindo alta efic\u00e1cia do medicamento para a maioria dos pacientes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Devolve o inverso da fun\u00e7\u00e3o de distribui\u00e7\u00e3o cumulativa relativamente a uma distribui\u00e7\u00e3o beta espec\u00edfica<\/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-10758","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 BETAINV (BETA.ACUM.INV) no Excel \u2013 como funciona, exemplos e sintaxe<\/title>\n<meta name=\"description\" content=\"Breve descri\u00e7\u00e3o da fun\u00e7\u00e3o BETAINV (BETA.ACUM.INV) do Excel. 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