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FTEST Function

The FTEST function is one of the statistical functions. It is used to return the result of an F-test. An F-test returns the two-tailed probability that the variances in array1 and array2 are not significantly different. Use this function to determine whether two samples have different variances.


FTEST(array1, array2)

The FTEST function has the following arguments:

Argument Description
array1 The first range of values.
array2 The second range of values.


Text, logical values and empty cells are ignored, cells that contain zero values are included. If the number of values in a data range is less than 2 or a variance of an array is 0, the function returns the #DIV/0! error value.

How to apply the FTEST function.


The figure below displays the result returned by the FTEST function.

FTEST Function

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