{"id":13961,"date":"2025-07-15T13:34:47","date_gmt":"2025-07-15T13:34:47","guid":{"rendered":"https:\/\/functiontranslator.com\/distr-f\/"},"modified":"2021-02-26T08:47:39","modified_gmt":"2021-02-26T08:47:39","slug":"fdist","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/es\/fdist\/","title":{"rendered":"DISTR.F"},"content":{"rendered":"

La funci\u00f3n DISTR.F en Excel y su equivalente FDIST en versiones anteriores, as\u00ed como en Google Sheets, se emplea para calcular la probabilidad de que dos conjuntos de datos con varianzas diferentes pertenezcan a poblaciones con la misma varianza. Esta funci\u00f3n es esencial en pruebas estad\u00edsticas, particularmente en el An\u00e1lisis de Varianza (ANOVA). A continuaci\u00f3n, exploraremos c\u00f3mo utilizar esta funci\u00f3n a trav\u00e9s de ejemplos pr\u00e1cticos y detallaremos su sintaxis.<\/p>\n

Sintaxis y par\u00e1metros<\/h2>\n

La funci\u00f3n DISTR.F en Excel se define de la siguiente manera:<\/p>\n

=DISTR.F(x; grados_libertad1; grados_libertad2; acumulado)<\/code><\/pre>\n
Los par\u00e1metros son:<\/p>\n
    \n
  • x:<\/strong> El valor para el cual se eval\u00faa la funci\u00f3n.<\/li>\n
  • grados_libertad1:<\/strong> N\u00famero de grados de libertad en el numerador.<\/li>\n
  • grados_libertad2:<\/strong> N\u00famero de grados de libertad en el denominador.<\/li>\n
  • acumulado:<\/strong> Un valor l\u00f3gico que determina el c\u00e1lculo de la funci\u00f3n. Si es VERDADERO, retorna la funci\u00f3n de distribuci\u00f3n acumulativa; si es FALSO, retorna la densidad de probabilidad.<\/li>\n<\/ul>\n
    Ejemplo pr\u00e1ctico 1: Comparaci\u00f3n de dos varianzas<\/h2>\n
    Imagina que tienes dos grupos de datos y deseas verificar si sus varianzas son significativamente diferentes, utilizando un nivel de significancia del 5%:<\/p>\n\n\n\n
    Grupo A<\/th>\nGrupo B<\/th>\n<\/tr>\n
    6, 7, 15, 13, 9<\/td>\n13, 9, 10, 12, 13<\/td>\n<\/tr>\n<\/table>\n
    Primero calculamos las varianzas de cada grupo, obteniendo 11.2 para el Grupo A y 2.7 para el Grupo B. Luego, usamos la varianza mayor como numerador para calcular el valor F:<\/p>\n
    =11.2 \/ 2.7<\/code><\/pre>\n
      <\/p>\n
    A continuaci\u00f3n, empleamos la funci\u00f3n DISTR.F en Excel para encontrar la probabilidad:<\/p>\n
    =DISTR.F(4.148; 4; 4; VERDADERO)<\/code><\/pre>\n
      <\/p>\n
    Si el valor calculado es menor que 0.05, concluimos que las varianzas son significativamente diferentes.<\/p>\n
    Ejemplo pr\u00e1ctico 2: An\u00e1lisis de ANOVA<\/h2>\n
    En un an\u00e1lisis ANOVA, usamos la funci\u00f3n DISTR.F para determinar si la variabilidad entre tres o m\u00e1s grupos es significativamente diferente. Considere las siguientes sumas de cuadrados y grados de libertad para un modelo:<\/p>\n
      \n
    • Suma de cuadrados entre grupos (SCentre): 60<\/li>\n
    • Suma de cuadrados dentro de grupos (SCdentro): 40<\/li>\n
    • Grados de libertad entre grupos (DFentre): 2<\/li>\n
    • Grados de libertad dentro de grupos (DFdentro): 12<\/li>\n<\/ul>\n
      Primero, calculamos el estad\u00edstico F:<\/p>\n
      = (60 \/ 2) \/ (40 \/ 12)<\/code><\/pre>\n
        <\/p>\n
      Luego, evaluamos este valor con la funci\u00f3n DISTR.F para obtener el p-valor:<\/p>\n
      =DISTR.F(9; 2; 12; VERDADERO)<\/code><\/pre>\n
      Un p-valor bajo sugiere que al menos un grupo muestra diferencias significativas en las medias.<\/p>\n","protected":false},"excerpt":{"rendered":"
      Devuelve la distribuci\u00f3n de probabilidad F<\/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-13961","post","type-post","status-publish","format-standard","hentry","category-compatibilidad"],"acf":[],"yoast_head":"\nFunci\u00f3n FDIST (DISTR.F) en Excel \u2013 c\u00f3mo funciona, ejemplos y sintaxis<\/title>\n<meta name=\"description\" content=\"Explicaci\u00f3n breve de la funci\u00f3n FDIST (DISTR.F) de Excel. 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