This F Test calculator can help you calculate the F value for a statistical test consisting of two set of values, that follows the F-distribution under the null hypothesis.

## How does this F-Test calculator work?

This statistical F-Test calculator can assist you when trying to determine the F value and the sample variance for two given data sets by applying these formulas:

F Value = s_{1}^{2}/ s_{2}^{2}

Where:

n = count of the values within the data set

x_{i} … x_{n} = numbers in the sample

x bar = sample mean

s^{2}= sample variance

s_{1}^{2 }= sample variance for first set of data

s_{2}^{2 }= sample variance for first set of data

Please note that the numbers should be placed one per line within the two boxes.

## Example of a calculation

Assuming we have the following two data sets let’s calculate the F value:

First set |
Second set |

10 | 5 |

12 | 44 |

16 | 28 |

25 | 2 |

19 | 64 |

3 | 18 |

The results in this case are:

■ F Value = 0.102089

■ Sample variance for first data set (s_{1}^{2}) = 58.166667

■ Sample variance for second data set (s_{2}^{2}) = 569.766667