Learn what analysis of variance (ANOVA) is, how it works, and when to use it. See how it helps compare means across multiple data groups in statistics and research.

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

MANOVA is a statistical test that extends the scope of the more commonly used ANOVA, that allows differences between three or more independent groups of explanatory (independent or predictor) ...

In a recent Nature Methods Points of Significance piece 1, drug combination was used to illustrate the principles of factorial experiments for the analysis of interaction effects. Factorial analysis ...

When testing whether the means of more than 2 groups are statistically different, you could use a one-way ANOVA. But if you have multiple treatment groups, you can use Dunnett’s one-way ANOVA. ANOVA ...