The ANOVA analysis of variance test is a fantastic tool when your data follows the normal distribution. Should your data fall outside of this category, you have the Kruskal-Wallis test.

This web calculator conducts a two-way ANOVA test. The calculator includes a video definition, an explanation of the formula and practice examples.

When you have more than two means to compare, an F test in PROC ANOVA or PROC GLM tells you whether the means are significantly different from each other, but it does not tell you which means differ ...