Repeated measures ANOVA error term

mjskay / ARTool

R Package for Aligned Rank Transform for Nonparametric Factorial ANOVAs

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Repeated measures ANOVA error term #13

Closed nuernber closed 7 years ago

nuernber commented 7 years ago

Regarding the example on the front page for repeated measures, it seems that other websites use an error term of Error(Tray / (Moisture*Fertilizer)) instead of simply Error(Tray). I've tried both ways for a 1-way repeated measures ANOVA and it doesn't seem to change the result. Can you explain if this is an error/bug or the expected functionality (for both 1-way and 2-way repeated measures ANOVAs)?

mjskay commented 7 years ago

Good question! The spec on the front page will work correctly in this particular instance. See issue #11 for a longer explanation.

I haven't gotten around to updating the front page example to include this explanation yet (issue #11 is there to remind me to do that before the next release).

nuernber commented 7 years ago

Thanks!