Basic Marketing Research 7th Edition by Gilbert Churchill,Tom Brown,Tracy Suter

Exercise 10

Crystallo Bottling Company, which provides plastic bottles to various soft drink manufacturers, his the following information pertaining to the number of cases per shipment and the corresponding transportation costs:

The marketing manager is interested in studying the relationship between the number of cases per shipment and the transportation costs. Your assistance is needed.
a. Plot the transportation costs as a function of the number of cases per shipment.
b. Interpret the scatter diagram.
c. Using a statistical software package, enter the data and calculate the Pearson product-moment correlation coefficient.
d. Does it appear that there is a relationship` between number of cases and transportation costs Explain.