{"id":13859,"date":"2025-07-15T13:34:47","date_gmt":"2025-07-15T13:34:47","guid":{"rendered":"https:\/\/functiontranslator.com\/distr-chicuad\/"},"modified":"2021-02-26T08:43:23","modified_gmt":"2021-02-26T08:43:23","slug":"chisq-dist","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/es\/chisq-dist\/","title":{"rendered":"DISTR.CHICUAD"},"content":{"rendered":"

La funci\u00f3n CHISQ.DIST en Excel y DISTR.CHICUAD en Google Sheets se emplea para calcular la distribuci\u00f3n chi-cuadrado, una herramienta esencial en el an\u00e1lisis estad\u00edstico, especialmente \u00fatil para pruebas de hip\u00f3tesis y an\u00e1lisis de tablas de contingencia. A continuaci\u00f3n se detalla su sintaxis y ofrecemos ejemplos pr\u00e1cticos de su aplicaci\u00f3n.<\/p>\n

Descripci\u00f3n de la sintaxis<\/h2>\n

La sintaxis de la funci\u00f3n CHISQ.DIST en Excel es la siguiente:<\/p>\n

CHISQ.DIST(x, grados_libertad, acumulado)<\/code><\/pre>\n
    \n
  • x:<\/strong> Valor numeric para el cu\u00e1l se desea calcular la distribuci\u00f3n.<\/li>\n
  • grados_libertad:<\/strong> N\u00famero de grados de libertad de la distribuci\u00f3n chi-cuadrado.<\/li>\n
  • acumulado:<\/strong> Un valor l\u00f3gico que determina la forma de la funci\u00f3n. Si es VERDADERO, CHISQ.DIST devuelve la funci\u00f3n de distribuci\u00f3n acumulativa; si es FALSO, se obtiene la funci\u00f3n de densidad de probabilidad.<\/li>\n<\/ul>\n
    En Google Sheets, la funci\u00f3n se denomina DISTR.CHICUAD y mantiene una sintaxis equivalente:<\/p>\n
    DISTR.CHICUAD(x, grados_libertad, acumulado)<\/code><\/pre>\n
    Ejemplos pr\u00e1cticos de aplicaci\u00f3n<\/h2>\n
    Ejemplo 1: Prueba de ajuste de bondad<\/h2>\n
    Imaginemos que un analista de mercado necesita verificar si la distribuci\u00f3n de ventas diarias en varias tiendas sigue un modelo esperado. Se recopilan datos de ventas de 5 tiendas durante 10 d\u00edas, obteniendo las siguientes frecuencias observadas:<\/p>\n
      \n
    • Frecuencias observadas: 3, 2, 1, 2, 1<\/li>\n
    • Frecuencias esperadas: 2, 2, 2, 2, 2<\/li>\n<\/ul>\n
      Para calcular el chi-cuadrado observado, se utiliza:<\/p>\n
      =((3-2)^2\/2) + ((2-2)^2\/2) + ((1-2)^2\/2) + ((2-2)^2\/2) + ((1-2)^2\/2)<\/code><\/pre>\n
      Esto resulta en un valor de chi-cuadrado de 3. Luego, la probabilidad de observar un valor extremo como este es:<\/p>\n
      =CHISQ.DIST(3, 4, VERDADERO) \/\/ en Excel =DISTR.CHICUAD(3, 4, VERDADERO) \/\/ en Google Sheets<\/code><\/pre>\n
      Este resultado representa el p-value, indicando la probabilidad de obtener un chi-cuadrado tan elevado bajo la hip\u00f3tesis nula.<\/p>\n
      Ejemplo 2: An\u00e1lisis de tablas de contingencia<\/h2>\n
      En un estudio cl\u00ednico se eval\u00faa si dos tratamientos difieren en efectividad. Los resultados se organizan en una tabla de contingencia 2×2:<\/p>\n\n\n\n\n
      Tratamiento A<\/th>\nTratamiento B<\/th>\n<\/tr>\n
      30<\/td>\n20<\/td>\n<\/tr>\n
      35<\/td>\n15<\/td>\n<\/tr>\n<\/table>\n
      Calculando el chi-cuadrado obtenemos un valor de 5.95. Con un grado de libertad para una tabla 2×2, encontramos:<\/p>\n
      =CHISQ.DIST(5.95, 1, VERDADERO) \/\/ en Excel =DISTR.CHICUAD(5.95, 1, VERDADERO) \/\/ en Google Sheets<\/code><\/pre>\n
      El p-value obtenido ofrece una medida de la probabilidad que las diferencias observadas o mayores sucedan por azar, asumiendo que no existe una diferencia real entre los tratamientos.<\/p>\n
      Estos ejemplos ilustran c\u00f3mo las funciones CHISQ.DIST y DISTR.CHICUAD pueden ser utilizadas para evaluar la significancia estad\u00edstica en estudios que involucran datos categ\u00f3ricos y ajuste de modelos.<\/p>\n","protected":false},"excerpt":{"rendered":"
      Devuelve la funci\u00f3n de densidad de probabilidad beta acumulativa<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[540],"tags":[],"class_list":["post-13859","post","type-post","status-publish","format-standard","hentry","category-estadistica"],"acf":[],"yoast_head":"\nFunci\u00f3n CHISQ.DIST (DISTR.CHICUAD) en Excel \u2013 c\u00f3mo funciona, ejemplos y sintaxis<\/title>\n<meta name=\"description\" content=\"Explicaci\u00f3n breve de la funci\u00f3n CHISQ.DIST (DISTR.CHICUAD) de Excel. 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