{"id":13856,"date":"2025-07-15T13:34:47","date_gmt":"2025-07-15T13:34:47","guid":{"rendered":"https:\/\/functiontranslator.com\/distr-chi\/"},"modified":"2021-02-26T08:43:19","modified_gmt":"2021-02-26T08:43:19","slug":"chidist","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/es\/chidist\/","title":{"rendered":"DISTR.CHI"},"content":{"rendered":"

Introducci\u00f3n a la funci\u00f3n DISTR.CHI en Excel y Google Sheets<\/h2>\n

La funci\u00f3n DISTR.CHI (conocida como CHIDIST en versiones anteriores de Excel) se utiliza para calcular la probabilidad de la cola derecha de la distribuci\u00f3n chi-cuadrada. Esta funci\u00f3n es esencial en an\u00e1lisis estad\u00edsticos, especialmente en pruebas de hip\u00f3tesis que comparan las frecuencias observadas con las esperadas.<\/p>\n

Sintaxis y ejemplos de uso<\/h2>\n

La sintaxis de DISTR.CHI es la siguiente:<\/p>\n

=DISTR.CHI(x, grados_libertad)<\/code><\/pre>\n
    \n
  • x<\/code>: El valor chi-cuadrado para el cual se desea calcular la probabilidad.<\/li>\n
  • grados_libertad<\/code>: N\u00famero de grados de libertad de la distribuci\u00f3n.<\/li>\n<\/ul>\n
    Ejemplo de uso:<\/p>\n
    =DISTR.CHI(10, 5)<\/code><\/pre>\n
    Este ejemplo calcula la probabilidad de que el valor chi-cuadrado sea mayor que 10, bajo una distribuci\u00f3n con 5 grados de libertad.<\/p>\n
    Aplicaciones pr\u00e1cticas de DISTR.CHI<\/h2>\n
    La funci\u00f3n DISTR.CHI se aplica en diferentes estudios estad\u00edsticos que requieren comparar datos observados con los esperados. A continuaci\u00f3n, ofrecemos algunos ejemplos de uso pr\u00e1ctico.<\/p>\n
    Caso pr\u00e1ctico 1: Test de bondad de ajuste<\/h2>\n
    Imagine un investigador que desea comprobar la equidad de un dado lanz\u00e1ndolo 120 veces y registrando la frecuencia de cada resultado, obteniendo los siguientes datos: {18, 20, 20, 22, 20, 20}. Si el dado es justo, cada resultado deber\u00eda aparecer aproximadamente 20 veces (120\/6).<\/p>\n
    Para realizar la prueba de chi-cuadrado, se calcula el estad\u00edstico chi-cuadrado usando DISTR.CHI:<\/p>\n
    Datos observados: 18, 20, 20, 22, 20, 20 Frecuencia esperada: 20, 20, 20, 20, 20, 20 C\u00e1lculo de chi-cuadrado = \u03a3((observado - esperado)^2 \/ esperado) = (18-20)^2\/20 + (20-20)^2\/20 + (20-20)^2\/20 + (22-20)^2\/20 + (20-20)^2\/20 + (20-20)^2\/20 = 0.2 + 0 + 0 + 0.2 + 0 + 0 = 0.4<\/code><\/pre>\n
    Utilizando 5 grados de libertad (uno menos que el n\u00famero total de posibles resultados):<\/p>\n
    =DISTR.CHI(0.4, 5)<\/code><\/pre>\n
    Esta f\u00f3rmula determina la probabilidad de obtener un valor igual o m\u00e1s extremo que 0.4, lo que ayuda al investigador a decidir si el dado es equitativo o no.<\/p>\n
    Caso pr\u00e1ctico 2: Comparaci\u00f3n de distribuciones observadas<\/h2>\n
    En un estudio sobre la preferencia de marcas de cereales entre hombres y mujeres, un analista recoge datos de 200 encuestas, mostrando las siguientes frecuencias:<\/p>\n\n\n\n\n\n\n\n
    Marca<\/th>\nHombres<\/th>\nMujeres<\/th>\nTotal<\/th>\n<\/tr>\n
    A<\/td>\n30<\/td>\n40<\/td>\n70<\/td>\n<\/tr>\n
    B<\/td>\n25<\/td>\n25<\/td>\n50<\/td>\n<\/tr>\n
    C<\/td>\n20<\/td>\n15<\/td>\n35<\/td>\n<\/tr>\n
    D<\/td>\n40<\/td>\n30<\/td>\n70<\/td>\n<\/tr>\n
    E<\/td>\n35<\/td>\n20<\/td>\n55<\/td>\n<\/tr>\n<\/table>\n
    El estad\u00edstico chi-cuadrado se calcula a partir de la suma de las diferencias cuadr\u00e1ticas entre las frecuencias observadas y las esperadas, divididas entre las esperadas. Posteriormente, se emplea DISTR.CHI para evaluar si las diferencias observadas son estad\u00edsticamente significativas.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Devuelve la probabilidad de una cola de distribuci\u00f3n chi cuadrado<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[542],"tags":[],"class_list":["post-13856","post","type-post","status-publish","format-standard","hentry","category-compatibilidad"],"acf":[],"yoast_head":"\nFunci\u00f3n CHIDIST (DISTR.CHI) en Excel \u2013 c\u00f3mo funciona, ejemplos y sintaxis<\/title>\n<meta name=\"description\" content=\"Explicaci\u00f3n breve de la funci\u00f3n CHIDIST (DISTR.CHI) de Excel. 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