In Google Sheets, the FTEST function is used to perform an F-test to compare the variances of two data sets.

The F-test is a statistical test that helps determine if the variances of two sets of data are significantly different from each other.

The FTEST function returns the probability of the two variances being significantly different.

The syntax for the FTEST function is as follows:

FTEST(range1, range2)

range1 and range2 are the ranges of data that you want to compare.

They can be represented by cell references, named ranges, or arrays.

Here's an example of how to use the FTEST function in Google Sheets:

=FTEST(A1:A10, B1:B10) This formula compares the variances of the data in cells A1 to A10 and B1 to B10.

The FTEST function will return the probability of the two variances being significantly different.

Keep in mind that the F-test assumes that the data sets are normally distributed and independent.

Also, a low probability value from the FTEST function suggests that the variances are significantly different, while a high

probability value suggests that the variances are similar.