![]() Our sample dataset contains observations from an imaginary study of the effects of fertilizer type and planting density on crop yield. In this guide, we will walk you through the process of a one-way ANOVA (one independent variable) and a two-way ANOVA (two independent variables). The null hypothesis (H 0) of the ANOVA is no difference in means, and the alternate hypothesis (H a) is that the means are different from one another. ANOVA tests whether there is a difference in means of the groups at each level of the independent variable. APA Citation Generator ANOVA in R: A step-by-step guideĪNOVA is a statistical test for estimating how a quantitative dependent variable changes according to the levels of one or more categorical independent variables.
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