(22) Next you will perform a forward-backward stepwise regression. For models with interactions, it is important to remember that if an interaction between two predicting variables is included in the model, then the main effects of the predicting variables should be included automatically. Thus for this variable selection, let the minimum and starting model be the model with no interactions (model?) and the full model be the one with interactions (modell). Based on this stepwise regression procedure, which of the following are true? a. The first term entering the model was DistPA10.14. b. Once a term entered the model, it was never discarded from the model. c. When DistLessHS entered the model, AIC dropped by 10. d. During the second-to-last step, the difference in deviance from adding DistA5.9 to the model versus adding DistPIncome is less than 2. Sol: b, d