Compatibility
Excel 2007 (Compatibility)
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=FTEST()
Returns 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.
Applies To:
Excel for Microsoft 365Excel for Microsoft 365 for MacExcel 2024Excel 2024 for MacExcel 2021Excel 2021 for MacExcel 2019Excel 2016
=FTEST(array1,array2)
Hover argument names in the table for details.
Output typeNumber
Popularity10 / 100
VolatileNo
Dynamic ArrayNo
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◧ Arguments
| Argument | Type | Required | Description |
|---|---|---|---|
array1 |
Range | Required | The first array or range of data. |
array2 |
Range | Required | The second array or range of data. |
▣ Examples
▦ Data
| Cell | Value |
|---|---|
A2 |
Data1 |
B2 |
Data2 |
A3 |
6 |
B3 |
20 |
A4 |
7 |
B4 |
28 |
A5 |
9 |
B5 |
31 |
A6 |
15 |
B6 |
38 |
A7 |
21 |
B7 |
40 |
A8 |
Data1 |
B8 |
Data2 |
A9 |
6 |
B9 |
20 |
A10 |
7 |
B10 |
28 |
A11 |
9 |
B11 |
31 |
A12 |
15 |
B12 |
38 |
A13 |
21 |
B13 |
40 |
F-test for the data sets above
=FTEST(A2:A6,B2:B6)
Result:
0.64831785
§ Remarks
- The arguments must be either numbers or names, arrays, or references that contain numbers.
- If an array or reference argument contains text, logical values, or empty cells, those values are ignored; however, cells with the value zero are included.
- If the number of data points in array1 or array2 is less than 2, or if the variance of array1 or array2 is zero, FTEST returns the #DIV/0! error value.
- The F-test value that is returned by the LINEST function differs from the F-test value that is returned by the FTEST function. LINEST returns the F statistic, whereas FTEST returns the probability.
✦ Tips
- This function has been replaced with one or more new functions that may provide improved accuracy and whose names better reflect their usage. Although this function is still available for backward compatibility, you should consider using the new functions from now on, because this function may not be available in future versions of Excel.
- The arguments must be either numbers or names, arrays, or references that contain numbers.
- If an array or reference argument contains text, logical values, or empty cells, those values are ignored; however, cells with the value zero are included.
- The F-test value that is returned by the LINEST function differs from the F-test value that is returned by the FTEST function. LINEST returns the F statistic, whereas FTEST returns the probability.
⚠ Common Errors
#DIV/0!
If the number of data points in array1 or array2 is less than 2, or if the variance of array1 or array2 is zero, FTEST returns the #DIV/0! error value.
Fix: مطمئن شوید هر آرایه حداقل دو مقدار عددی دارد و واریانس آن صفر نیست.
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