# Documentation/Calc Functions/FTEST

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## Function name:

FTEST

## Category:

Statistical Analysis

## Summary:

Calculates the two-tailed probability that indicates that variances of the given data sets are not much different.

## Syntax:

FTEST(**Data1**; **Data2**)

## Returns:

Returns a real number which is the result of an F test.

## Arguments:

**Data1** is a reference to a range of cells that is considered the first data set.

**Data2** is a reference to a range of cells which is considered the second data set.

- If a reference to a cell contains text, logical values, or empty cells, then the function ignores these values.
- If
**Data1**or**Data2**has a variance 0 or if the number of data points on either of them are less than 2, the function returns an error value.

## Additional details:

For more details on F-test, visit Wikipedia

## Examples:

Data1 | Data2 | |
---|---|---|

1 | 195 | 200 |

2 | 151 | 180 |

3 | 148 | 178 |

4 | 189 | 165 |

5 | 183 | 192 |

6 | 154 | 144 |

Formula | Description | Returns |
---|---|---|

=FTEST(A1:A6;B1:B4) | The function calculates whether the two data sets are different in their variance and returns the probability that both sets could have come from the same total population. Hee the function gives f-test result for datasets in A1:A6 and B2:B4 | 0.559085631948065 |

## Related LibreOffice functions:

## ODF standard:

None

## Equivalent Excel functions:

FTEST