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Excel F.TEST Function

The F.TEST function returns the result of an F.TEST for two given arrays or ranges, which is the two-tailed probability that the variances in the two supplied arrays are not significantly different.

Note: The F.TEST function was introduced in Excel 2010. So, it is not available in earlier versions of Excel.

F.TEST function 1


=F.TEST(array1, array2)


  • array1 (required): The first range of data.
  • array2 (required): The second range of data.

Return Value

The F.TEST function returns a numeric value.

Function Notes

  • array1 and array2 must be numbers, or names, arrays or references that contain numbers.
  • If array1 or array2 contains text(s) or logical values or empty cells, F.TEST function will ignore them.
  • F.TEST returns the #DIV/0! error value if:
    • The number of data points in array1 or array2 is less than 2.
    • The variance of array1 or array2 is 0 (zero).
  • The F.TEST value returned by the LINEST function differs from the F-test value returned by F.TEST. LINEST returns the F-statistic, whereas F.TEST returns the probability.


To calculate the result of an F-test for two arrays as shown in the table below, please copy or enter the below formula in the result cell (E6), and press Enter to get the result.


f.test function 2

Related functions

Excel T.TEST Function

The T.TEST function returns the probability that is associated with a Student's t-test. T.TEST is often used to test the probability of two samples that have underlying populations with the same mean.

Excel F.INV Function

The Excel F.INV function returns the inverse of F probability distribution. If p (probability) = F.DIST(x,…), then F.INV(p,…)= x.

Excel F.DIST Function

The Excel F.DIST function returns the F probability distribution which is usually used to measure the degree of diversity between two data sets.

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