Using all your knowledge on regression analysis find the bes

Using all your knowledge on regression analysis, find the best linear statistical model for the response (Y) based on explanatory variables XI, X2, X3, and X4. Product terms such as Xi*Xj might be potential predictor variables. Of course, you may also consider transformation if necessary. But, your goal is to suggest a model as simple as possible. Note that it is required to provide important validations for your choice of model. The relevant data are given as follows:

Solution