[R] summary.lm as a post-hoc test?

2010-10-30 Thread Alex F. Bokov
Let's assume that according to Anova(lm(y~a*b, data=d)) the a:b interaction is significant, and I would like to know if there are specific combinations of a and b levels that differ from the control group. Are there any caveats against simply looking at the p-values in the output generated by

Re: [R] summary.lm as a post-hoc test?

2010-10-30 Thread Alex Bokov
On 10/30/2010 03:34 PM, Dimitri Liakhovitski wrote: You are asking a statistics question, not an R question. R-list people never react to such posts. Or they give you a nasty reply of the type: Do you homework first, and then ask questions here. Good point. I thought it was an R question

Re: [R] summary.lm as a post-hoc test?

2010-10-30 Thread Dimitri Liakhovitski
Then look at that package I referred in the other e-mail. It does exactly what you need - I am just not sure if it's still available. The author's e-mail is there, though - you can ask. Good luck. Dimitri On Sat, Oct 30, 2010 at 5:04 PM, Alex Bokov bo...@uthscsa.edu wrote: On 10/30/2010 03:34