Blair Jokinen is a sales manager for Pearson, one of the top publishing companies in the world. Blair manages 40 sales representatives who visit college professors in Europe. On Saturday mornings, each representative sends Blair a report that includes the number of professors visited during the previous week. Listed here, ordered from smallest to largest, is the number of visits last week.

a. Create a visual presentation of the data with a dot plot.

b. What are the minimum, maximum, and range of number of sales calls?

c. How would you describe the shape of the distribution: bell shaped, negatively skewed, or positively skewed?

d. Visually, estimate the central location of the distribution.

e. Find the mode of the distribution. Why is this value the mode?

f. Find the median of the distribution. Why is this value the median?

g. What is the first quartile of sales? What does it mean?

h. What is the third quartile of sales? What does it mean?

i. What is the ninth decile?

j. What is the 33rd percentile?

Transcribed Image Text:

22 22 23 23 23 23 23 24 24 24 24 24 24 24 24 25 25 25 25 25 25 25 25 25 25 25 25 25 26 26 26 26 26 26 27 27 27 27 28 28