For Exercises, use Minitab to assist you in answering the following. (a) Fit second-order…

For Exercises, use Minitab to assist you in answering the following. (a) Fit second-order…

For Exercises, use Minitab to assist you in answering the following.

(a) Fit second-order polynomial models.

(b) Check for multicolliearity in the data for each of the polynomial models. Comment on your results.

(c) Test the contribution of the second-order terms in the models when compared to the reduced first-order model. Comment on your results.

Consider the MPG data and multiple linear regression problem in Exercises 6-18 and 6-24.

For Exercises 6-35 to 6-38, using only first-order terms, build regression models using the following techniques:

(a) All possible regression. Find the Cp and S values.

(b) Forward selection

(c) Backward elimination

(d) Comment on the models obtained. Which model would you prefer?

 

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