we have a variable that is dummy coded (0 and 1) and we want to use it as a predictor. We have entered this variable by using "Categorical are". We think in this case it is not possible to use a chi-square difference test to compare two nested models.
Is it possible to enter a dummy coded variable into a model as a predictor and to treat it intervall scaled?
It would be very kind if you can take the time to answer this question.