repeated-measures multiple regression/ANCOVA/MANCOVA
On 11/16/2013 11:45 AM, Jakub Szewczyk wrote:
I am trying to analyze a dataset where I have 1 continuous between-item variable (C), and 2 factorial within-item variables (3- and 2-level: F3, F2). I'm interested in whether slope of C is different from 0 at different combinations of F3 and F2, and whether it varies between these combinations.
[snip]
I also considered using car::Anova() for running a repeated-measures MANCOVA analysis, but if I got this thread right (http://thread.gmane.org/gmane.comp.lang.r.general/270271/focus=270275), this is (at present) not possible to do. Are these ways of analyzing data valid?
AFAICS, you do not have a time-varying covariate, so a repeated measures Anova() should work. You can probably test your hypotheses using car::linearHypothesis on the parameters in C:F2, C:F3.
Michael Friendly Email: friendly AT yorku DOT ca Professor, Psychology Dept. & Chair, Quantitative Methods York University Voice: 416 736-2100 x66249 Fax: 416 736-5814 4700 Keele Street Web: http://www.datavis.ca Toronto, ONT M3J 1P3 CANADA