{"id":10912,"date":"2025-07-15T13:34:51","date_gmt":"2025-07-15T13:34:51","guid":{"rendered":"https:\/\/functiontranslator.com\/inv-gama\/"},"modified":"2021-02-25T17:20:16","modified_gmt":"2021-02-25T17:20:16","slug":"gamma-inv","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/pt-pt\/gamma-inv\/","title":{"rendered":"INV.GAMA"},"content":{"rendered":"

A fun\u00e7\u00e3o INV.GAMA, dispon\u00edvel tanto no Microsoft Excel quanto no Google Planilhas, \u00e9 uma ferramenta estat\u00edstica crucial para calcular o inverso da distribui\u00e7\u00e3o acumulada gama. Essencial em estat\u00edstica e an\u00e1lise de dados, essa fun\u00e7\u00e3o \u00e9 frequentemente utilizada para estimar par\u00e2metros em situa\u00e7\u00f5es que seguem uma distribui\u00e7\u00e3o gama.<\/p>\n

Descri\u00e7\u00e3o da Sintaxe<\/h2>\n

A fun\u00e7\u00e3o INV.GAMA \u00e9 estruturada da seguinte maneira:<\/p>\n

=INV.GAMA(probabilidade, alfa, beta)<\/code><\/pre>\n
    \n
  • probabilidade<\/strong>: Corresponde \u00e0 probabilidade associada \u00e0 distribui\u00e7\u00e3o gama inversa. Este valor deve estar entre 0 e 1.<\/li>\n
  • alfa<\/strong>: Conhecido como par\u00e2metro de forma, deve ser um n\u00famero positivo.<\/li>\n
  • beta<\/strong>: Representa o par\u00e2metro de taxa e tamb\u00e9m deve ser positivo.<\/li>\n<\/ul>\n
    Os par\u00e2metros alfa e beta s\u00e3o essenciais, pois definem a configura\u00e7\u00e3o da distribui\u00e7\u00e3o gama, influenciando diretamente o resultado obtido com a fun\u00e7\u00e3o INV.GAMA.<\/p>\n\n\n\n\n\n
    Par\u00e2metro<\/th>\nDescri\u00e7\u00e3o<\/th>\n<\/tr>\n
    probabilidade<\/td>\nUm n\u00famero entre 0 e 1<\/td>\n<\/tr>\n
    alfa<\/td>\nPar\u00e2metro de forma, deve ser positivo<\/td>\n<\/tr>\n
    beta<\/td>\nPar\u00e2metro de taxa, deve ser positivo<\/td>\n<\/tr>\n<\/table>\n
    Exemplos Pr\u00e1ticos de Utiliza\u00e7\u00e3o<\/h2>\n
    A seguir, s\u00e3o apresentados casos pr\u00e1ticos de aplica\u00e7\u00e3o da fun\u00e7\u00e3o INV.GAMA.<\/p>\n
    1. C\u00e1lculo do Tempo de Vida \u00datil<\/h2>\n
    Imagine que precisemos calcular o tempo m\u00ednimo de opera\u00e7\u00e3o sem falhas de um equipamento com certo n\u00edvel de confian\u00e7a. Suponhamos que a vida \u00fatil do equipamento siga uma distribui\u00e7\u00e3o gama com alfa = 5 e beta = 1.<\/p>\n
    =INV.GAMA(0.9, 5, 1)<\/code><\/pre>\n
    Este exemplo determina o tempo de vida \u00fatil correspondente ao percentil 90% da distribui\u00e7\u00e3o gama. Portanto, h\u00e1 90% de chance de que o equipamento funcione pelo menos por esse per\u00edodo sem falhar.<\/p>\n
    2. An\u00e1lise Financeira<\/h2>\n
    No setor financeiro, a distribui\u00e7\u00e3o gama \u00e9 \u00fatil para modelar o tempo at\u00e9 um pr\u00f3ximo evento, como o momento de um novo investimento ou a receita de lucros futuros. Imagine que desejamos saber o prazo no qual temos 85% de confian\u00e7a para o pr\u00f3ximo recebimento de um investimento que segue a distribui\u00e7\u00e3o gama, com par\u00e2metros alfa = 2 e beta = 3.<\/p>\n
    =INV.GAMA(0.85, 2, 3)<\/code><\/pre>\n
    Este c\u00e1lculo indica o tempo esperado at\u00e9 o pr\u00f3ximo evento financeiro, considerando uma confian\u00e7a de 85% com os par\u00e2metros estabelecidos.<\/p>\n
    Esses exemplos demonstram a versatilidade e utilidade da fun\u00e7\u00e3o INV.GAMA em \u00e1reas como manuten\u00e7\u00e3o de equipamentos e an\u00e1lise financeira, oferecendo um recurso valioso para modelagem e previs\u00e3o de eventos baseados na distribui\u00e7\u00e3o gama.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Devolve o inverso da distribui\u00e7\u00e3o gama 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-10912","post","type-post","status-publish","format-standard","hentry","category-estatistica"],"acf":[],"yoast_head":"\nFun\u00e7\u00e3o GAMMA.INV (INV.GAMA) no Excel \u2013 como funciona, exemplos e sintaxe<\/title>\n<meta name=\"description\" content=\"Breve descri\u00e7\u00e3o da fun\u00e7\u00e3o GAMMA.INV (INV.GAMA) do Excel. 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