The Excel F.DIST.RT Function

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Related Functions:  F.DIST F.INV.RT

Basic Description

The Excel F.DIST.RT function calculates the (right-tailed) F Probability Distribution, which measures the degree of diversity between two data sets.

The function is new to Excel 2010 and so is not available in earlier versions of Excel. However the F.Dist.Rt function is simply a new version of the Fdist function, which is 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.

F.Dist.Rt Function Example The chart on the right shows the right-tailed F Probability Distribution with deg_freedom1 (the numerator degrees of freedom) set equal to 1 and deg_freedom2 (the denominator degrees of freedom) set equal to 2. If you want to calculate the value of this function at x = 5, this can be done using the Excel F.Dist.Rt function, as follows: =F.DIST.RT( 5, 1, 2 ) This gives the probability 0.154845745.

F Prob. Distribution with deg_freedom1 = 1 & deg_freedom2 = 2

Further details and examples of the Excel F.Dist.Rt function can be found on the Microsoft Office website.

Trouble Shooting

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