Anova Normality Assumption Violation. The F statistic is. Then reject the null hypothesis ie your data deviate significantly from the normal distribution.
Common Assumptions About Data Part 2 Normality And Equal Variance from blog.minitab.com
Importance of assumptions for ANOVA Note that R and pretty much all statistics packages will calculate the ANOVA and the P-value but it is up to you to recognize that the P-value is accurate only if the assumptions are met. TESTING ASSUMPTIONS IN BEAR RESEARCH. 2 Perform an equivalent non-parametric test such as a Kruskal-Wallis Test that doesnt require the assumption of normality.
Under bivariate normality assumptions this statistic approximately follo ws students.
1 Transform the response values of your data so that the distributions are more normally distributed. However this is not true with unbalanced data as even relatively small differences in group variances can be problematic. In Section 3 we will empirically show that violation of the joint normality assumption will. The first two of these assumptions are easily fixable even if the last assumption is not.
