Topic: Advanced Statistics-Categorical Data Analysis
Problem - Let W, X, Y, and Z be classification variables with 2, 3, 4, and 3 categories respectively. Consider models: (WZ, XY, XZ, YZ) and (WXZ, XYZ)
(i) List full model λ terms which are equal zero in each of these models.
(ii) Specify number of degrees of freedom for each model? Justify your answer.
(iii) In any of these models a sub-model of the other model?
Need detailed answers for each question, which includes results, explanation and conclusion step by step.