You are interested in looking at the relationship between the number of people on the sales force and the dollar volume of sales.The following data show gross sales,Y, measured in millions of dollars and the number of people on the sales force,X, in the form of (X,Y) pairs for 12 people; (15,34),(24,55),(27,67),(16,31),(19,39),(23,46),(26,53),(22,43),(28,45) and (17,41).