20. The top 20 concert tours and their average ticket price for shows in North America are shown here. The list is based on data provided to the trade publication Pollstar by concert promoters and venue managers (Associated Press, November 21, 2003).

Summarize the data by constructing the following:

a. A frequency distribution and a percent frequency distribution

b. A histogram

c. What concert had the most expensive average ticket price? What concert had the least expensive average ticket price?

d. Comment on what the data indicate about the average ticket prices of the top concert tours.