Re: [R] Mixed ANCOVA with between-Ss covariate?

2009-02-12 Thread Mike Lawrence
I'm surprised there were no takers on this query; I thought it would be an easy answer, particularly where I provided example data set and code. Did my request run afoul of the list etiquette? On Tue, Feb 10, 2009 at 5:12 PM, Mike Lawrence m...@thatmike.com wrote: Hi all, I have data from an

Re: [R] Mixed ANCOVA with between-Ss covariate?

2009-02-12 Thread Mark Difford
Hi Mike, I'm surprised there were no takers on this query; I thought it would be an easy answer, particularly where I provided example data set and code. The following simplification should help you to answer your own question. covariate_aov = aov(dv~(covariate+group+iv1+iv2)^2,data=a)

[R] Mixed ANCOVA with between-Ss covariate?

2009-02-10 Thread Mike Lawrence
Hi all, I have data from an experiment with 3 independent variables, 2 are within and 1 is between. In addition to the dependent variable, I have a covariate that is a single measure per subject. Below I provide an example generated data set and my approach to implementing the ANCOVA. However the