## 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.

#### Syntax

=F.TEST(array1, array2)

#### Arguments

• 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.

#### Example

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(B6:B12,C6:C12)

#### 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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