FDIST function

Returns the F probability distribution. You can use this function to determine whether two data sets have different degrees of diversity. For example, you can examine test scores given to men and women entering high school and determine if the variability in the females is different from that found in the males.

Syntax

FDIST(x,degrees_freedom1,degrees_freedom2)

X     is the value at which to evaluate the function.

Degrees_freedom1     is the numerator degrees of freedom.

Degrees_freedom2     is the denominator degrees of freedom.

Remarks

  • If any argument is nonnumeric, FDIST returns the #VALUE! error value.

  • If x is negative, FDIST returns the #NUM! error value.

  • If degrees_freedom1 or degrees_freedom2 is not an integer, it is truncated.

  • If degrees_freedom1 < 1 or degrees_freedom1 ≥ 10^10, FDIST returns the #NUM! error value.

  • If degrees_freedom2 < 1 or degrees_freedom2 ≥ 10^10, FDIST returns the #NUM! error value.

  • FDIST is calculated as FDIST=P( F<x ), where F is a random variable that has an F distribution.

Example

X

Degrees_freedom1

Degrees_freedom2

Formula

Description (Result)

15.20675

6

4

=FDIST([X],[Degrees1],[Degrees2])

F probability distribution for the specified arguments (0.01)

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