Refer to Exercise 15-44.

a. Develop the correlation matrix that includes all independent variables and the dependent variable.

Predict the order that the variables will be selected into the model if forward selection stepwise regression is used.

b. Use forward selection stepwise regression to develop a model for predicting the number of calls that the company will receive. Write a report that describes what has taken place at each step of the regression process.

c. Compare the forward selection stepwise regression results in part b with the backward elimination results determined in Exercise 15-44. Which model would you choose? Explain your answer.