subject:"\[R\] Post\-hoc test on ANCOVA"

Re: [R] Post-hoc test on ANCOVA

2012-02-01 Thread David Winsemius

On Feb 1, 2012, at 4:34 PM, Mark Na wrote: Dear R-helpers, I have an ANCOVA with a significant effect of the factor, which has three levels. I wish to determine which of the levels are different from each other but, because my model was fitted with lm(), I cannot use TukeyHSD. For some reason

[R] Post-hoc test on ANCOVA

2012-02-01 Thread Mark Na

Dear R-helpers, I have an ANCOVA with a significant effect of the factor, which has three levels. I wish to determine which of the levels are different from each other but, because my model was fitted with lm(), I cannot use TukeyHSD. For some reason, I get different results (no significant effec