The F-distribution is used to compare the variances of two populations. It is defined as the ratio of two normally distributed populations' variances. The F-distribution depends on the degrees of freedom v1 and v2, which are based on the sample sizes. The null hypothesis is that the two populations have equal variances, and the F-statistic is calculated to test this. If the calculated F exceeds the critical table value, the null hypothesis is rejected.
![The F Distribution ,[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)