F Distribution

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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.

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