13 Aug
2013
13 Aug
'13
2:09 a.m.
Dear Freesurfers,
I have a question concerning the "nuisance factors" in the qdec dialogue. Suppose I have two independent variables x1 (discrete) and x2 (continuous), and only one observable y. I choose "Discrete (Fixed factor) = x1", "Continuous (covariate) = x2".
If I further chose "Nuisance factor = x2", does that imply that 1) my contrast matrix is (0 1) 2) null hypothesis: Y is independent of x2
Thank you very much!
Sincerely, Ye