3 ms·
> The Y axis is the mean score of the team, but that score is not independent from the opposing team. The paper is garbage, but this is not true. All Y-axes ar
by dvt 4y ago
> The Y axis is the mean score of the team, but that score is not independent from the opposing team.
The paper is garbage, but this is not true. All Y-axes are how they define "team performance" -- in the case of the FIFA study, it's qualification rankings. In the case of the NBA/MLB study it's end-of-season team win percentages.
- Galanwe 4y agoIndeed, my bad. The argument still holds though. Overall team disparity should be much higher at low level than high level. A team composed of "Michael Jordan + random players" would crush any amateur league with 100% win rate. The same team with "Michael Jordan + Magic Johnson + random players" would probably get 75% win rate in an NBA match. So the metric "win rate" alone, or any other metric non independent of the opposing teams level, is naturally useless in this study.