1. Calculate a mean and a standard deviation for each variable.

2. Set a 95 percent confidence interval around the mean for each variable.

3. Calculate the median, mode, and range for each variable.

4. Organize the data for current sales into a frequency distribution with three classes:

(a) Under $500,000,

(b) $500,000 to $999,999, 

(c) $1,000,000 and over.

5. Organize the data for years of selling experience into a frequency distribution with two classes:

(a) Less than five years 

(b) Five or more years.

6. Convert the frequency distributions from question 5 to percentage distributions.

Download the data sets for this case from www .cengage.com/marketing/zikmund or request them from your instructor.

Coastal Star Sales Corporation is a West Coast wholesaler that markets leisure products from several manufacturers. Coastal Star has an 80-person sales force that sells to wholesalers in a six-state area, which is divided into two sales regions. Case Exhibit 13.1-1 shows the names of a sample of eleven salespeople, some descriptive information about each person, and sales performance for each of the last two years.