Problem of the Day

Chapter 8, Lesson 1

A book-store owner has five store locations in a city. He wants to know what type of book in the nonfiction category sells best in this city. Here are the quarterly summaries from the five locations.

 

From this report, the owner concluded that Biography is the best selling type of nonfiction book in his stores in this city.

Explain how the actual data might not confirm this conclusion.