Textbook used for this course: The Economics of Sports, 6th edition, by Michael Leeds, Peter von Allmen, and Victor Matheson (Routledge Publishing)

3. Below are the final winning percentages of the NBA 1989-90 and 2016-17 regular seasons. Each season was 82 games long.

* * * Using the ratio of the standard deviation of winning percentage to the standard deviation of the winning percentages in a perfectly balanced ("ideal") league, has the NBA become more competitively balanced? Be sure to show (a) the standard deviation of WP in each season; (b) the standard deviation of a perfectly balanced league; and (c) the ratios for each season. (NOTE - This is best done with a spreadsheet like Excel.