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3. (15 pts) We want to build a regression model and have many observations and many predictors. (a) (7 pts) From a computational point of

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3. (15 pts) We want to build a regression model and have many observations and many predictors. (a) (7 pts) From a computational point of view, which of these two model building algorithms are preferable: best subset selection or forward stepwise selection? (b) (8 pts) True or false and explain: Best subset selection will result in a smaller prediction error than forward stepwise selection because every model that is considered in forward stepwise selection is also considered in best subset selec- tion

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