The Excel F.INV Function

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Related Functions:  F.DIST F.INV.RT

Basic Description

The Excel F.INV.RT function calculates the inverse of the Cumulative F Distribution for a supplied probability.

The function is new to Excel 2010 and so is not available in earlier versions of Excel.

The format of the function is :

Where the function arguments are:

If either deg_freedom1 or deg_freedom2 are decimal numbers, these are truncated to integers by Excel.

The Excel F.Inv function is the inverse of the Cumulative form of the Excel F.Dist function.

F.Inv Function Example The chart on the right shows the inverse of the right-tailed F Probability Distribution with the numerator degrees of freedom equal to 2 and the denominator degrees of freedom equal to 5. If you want to calculate the value of this function for a probability equal to 0.9, this can be done using the Excel F.Inv function, as follows: =F.INV( 0.9, 2, 5 ) This gives the result 3.779716079.

Inverse Cumulative F Dist., deg_freedom1 = 2 & deg_freedom2 = 5

Further information and examples of the Excel F.Inv function can be found on the Microsoft Office website.

Trouble Shooting

If you get an error from the Excel F.Inv function this is likely to be one of the following :