Enter the mean square between groups and the mean square within groups into the calculator to determine the f ratio.

## F Ratio Formula

The following formula is used to calculate an F ratio.

F = MBG / MWG

- where f is the f ratio
- MBG is the mean square between groups
- MWG is the mean square within groups

## FAQ

**What is an F ratio?**

An F ratio is a measure of variance between means of groups. Just as the formula above states it’s a ratio of mean square between groups divided by mean square within groups. The larger the difference the higher the ratio and the higher the variance.

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