12. (5 pts) An experimenter has decided to use 3 predictors (X₁, X2, X3) in an implementation of a regression model that

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12 5 Pts An Experimenter Has Decided To Use 3 Predictors X X2 X3 In An Implementation Of A Regression Model That 1 (29.24 KiB) Viewed 38 times

12. (5 pts) An experimenter has decided to use 3 predictors (X₁, X2, X3) in an implementation of a regression model that was based on a data set of 1,000 observations. The experimenter is unsure whether to include the quadratic term (X²) for none, 1, 2, or all 3 of the predictors to possibly improve the model but is very concerned about overfitting. Suggest using only 2 or 3 sentences a reasonable approach for the experimenter to follow. Be sure to indicate the number of models the experimenter must consider in your suggested approach.