Analysis of variance is sensitive to the distribution of the error term. If the error term is not normally distributed, the statistics based on normality can be ...

Further, this assumes you have fulfilled the assumptions of the ANOVA test, especially that the variances of the groups are equal. Thankfully, it is easy to determine whether multiple group means ...

If one of these tests rejects the assumption of homogeneity of variance, you should use Welch's ANOVA instead of the usual ANOVA to test for differences between group means. However, this conclusion ...

A step in MANOVA that differs from ANOVA is calculation of the test statistic. There are various test statistics that can be used in MANOVA, each suitable for different situations with regards to ...