This page discusses the F test for comparing two variances, emphasizing normal distribution assumptions. It includes one-way ANOVA, which compares multiple groups under similar conditions. The F stati...This page discusses the F test for comparing two variances, emphasizing normal distribution assumptions. It includes one-way ANOVA, which compares multiple groups under similar conditions. The F statistic, the ratio of variation between group means to within-group variation, is introduced. The positively skewed F distribution is explained, along with the relationship between the null hypothesis and the F statistic.