Varianztests
Varianztests, also known as tests for equality of variances, are statistical hypothesis tests used to determine if two or more population variances are equal. These tests are often a prerequisite for other statistical analyses, such as t-tests or ANOVA, which assume equal variances. If the assumption of equal variances is violated, the results of these subsequent tests may be unreliable.
Several types of varianztests exist, with the F-test for equality of variances being one of the most
The null hypothesis for most varianztests is that all population variances are equal. The alternative hypothesis