If the number of variables, p, is 6 , then the approximate possible number of models when using the subset approach is begin{tabular}{l} 26 hline 62 hline 210 hline 66 end{tabular} Question 5 1 pts Forward selection begins with a model with predictors. Question 6 1 pts Forward stepwise selection is a computationally more efficient than the subset selection approach. True False.