How do the average credit scores of people living in various cities differ? The file Credit Scores contains an ordered array of the average credit scores of 2,570 American cities. Source: Data extracted from “Study shows cities with highest and lowest credit scores,” accessed at bit.ly/2uubZfX. a. Construct a percentage histogram. b. Construct a cumulative percentage polygon. c. What conclusions can you reach concerning the average credit scores of people living in different American cities?