12.82 A company is evaluating its sales representatives’

performance. The company uses multiple regression to develop a model and identify important variables that predict every employee’s performance.

Data from 36 sales representatives is collected and saved in the data file Performance. The variables consist of the monthly sales performance rating (0 – 1) (y), sales volume 1x12, distance traveled for meeting customers

(in km) 1x22, and time spent on cold calling (in hours) 1x32. Develop a multiple regression model, and write a report on your findings.