From this site, https://sixsigmastudyguide.com/f-distributionf-statistic-f-test/#:~:text=The%20F%2Ddistribution%2C%20also%20known,distribution%20of%20an%20F%2DStatistic. you will see: The F-distribution, also known Fisher-Snedecor distribution, is extensively used to test for equality of variances from two normal populations. F-distribution got its name after R.A. Fisher, who initially developed this concept in the 1920s. It is a probability distribution of an F-Statistic. Edwin