 |
 |
Dear all I'm trying to set a one-way between-groups ANOVA with 2 or three covariates, but I'm having some troubles, can any one help me with this please? I set a Full factorial design with 1 factor and 3 levels, and no mean scaling and no ANCOVA, is it right? If so; Lets suppose that I have a matrix for my 3 groups and 2 confounding variables: groups zAge Gender 1 0 0 -0.56 1 1 0 0 -1.2 2 1 0 0 1.4 2 0 1 0 1.4 1 0 1 0 -0.86 1 0 1 0 -0.94 2 0 0 1 -1.2 2 0 0 1 1.4 1 0 0 1 -0.86 2 I've set an F contrast [1 -0.5 -0.5 -0.5 1 -0.5 -0.5 -0.5 1] --> reducing the design for columns 4 & 5 Actually if I only set the columns for reduced design the contrast is set automatically, for which I interpret measures the same Fcontrast that I wrote. or 3 t contrasts: c1: [1 0 0] c3: [0 1 0] c3: [0 0 1] what should I select in the "Null hyp. to assess"? wich of these is correct to test the differences between any of the 3 groups? Any help will be so appreciated Thanks in advance Gabriel