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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.

The FTEST function syntax is:

FTEST(array1, array2)


array1 is the first range of values.

array2 is the second range of values.

The values can be entered manually or included into the cells you make reference to. 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.

To apply the FTEST function,

  1. select the cell where you wish to display the result,
  2. click the Insert function
    icon situated at the top toolbar,
    or right-click within a selected cell and select the Insert Function option from the menu,
    or click the
    icon situated at the formula bar,
  3. select the Statistical function group from the list,
  4. click the FTEST function,
  5. enter the required arguments separating them by commas,
  6. press the Enter button.

The result will be displayed in the selected cell.

FTEST Function

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