I am working with MLwin for the first time. In my studie I have 1 dependent variable and I'm adding 4 parameters at the model. One of those 4 parameters is educational track. This variable consists of 3 tracks: the general, the technical and the vocational track. The general track is the referece category. In this study, I'm not using interaction effects.
In my analysis I used 1 df for each X^2-test. I rode that you have to use 2 df when you add 2 parameters at the model. Is this in case of interaction-effects? Or is this what I have to do when I'm adding the variable 'educational track'? It's kind of confusing for me.