[R] Simple Effects Analysis for ANOVA

For an ANOVA class assignment, we are doing post-hoc tests for interactions. For simple effect analysis on an interaction, I went through a really convoluted process to get my statistics and want to know if there is a more straightforward way. I have a 3x2 design with self-concept 1:3 (low, moder

[R] Planned comparison ANOVA

I am trying to do a priori ANOVA analysis for a class assignment. The professor uses SPSS and does not know R. I want to do a simple planned comparison but have been unable to find a function or specific help. There is a grouping variable with five levels and a subsequent response variable. I also

[R] Simple simulations

I am taking a basic statistics course this summer, and while the majority of the class is using a statistical package that came with the book, I am doing everything in R for practical reasons. Forgive me if there is documentation/instruction easily available on this topic, but Google and forums sea