In ecology, it’s common to manipulate two factors at once – say, nutrient levels and herbivory. The standard way to analyze such a design is with a two-way ANOVA. What I’m interested in knowing (in part as the basis for a future post) is how you interpret the results.
And, while we’re on the topic of ANOVAs, another thing that varies is whether people use stepwise removal of model terms. I think of this as something that has become more common as a result of Crawley’s R book. Do you use stepwise removal of model terms?
We’ll follow up on these polls in future posts!