Problem
Use data from the following website to answer the question. Note that this landing page takes you to data for the current season, but you can look up data for previous seasons.
1. Calculate the within-season variation in the NHL using data from 2018-2019. This was the last regular season pre-COVID in which 82 games were played. Now, calculate the within-season variation using data from 2021-2022. This was the first regular 82-game season post-COVID. What has happened to the competitive balance (as measured by within-season variation) for the NHL over this Bme period? (Your answer must include the formula for calculating within-season variation.)
2. Now, calculate the within-season variation using data from the 2020-2021 season. This was during COVID and each team only played 56 regular games.
3. Write down the formula used to adjust a within-season variation measure for the actual number of games played. Calculate this value for the 2020-21 season and use it to adjust your within-season variation. (Show all your work.)
4. Compare within-season variation across the three Bme periods: 2018-2019, 2020- 2021, and 2021-2022 estimates. (Hint: you must adjust the pre and post-COVID periods for the number of games played). What does your data suggest has happened to compeBBve balance over that period?