I looked at the data. It is very interesting…you should ask the author to add information on now many scores contributed to the Max/Min/Average listed. It is important and would allow one to compute whether the scores from 2010 are statistically different than those of 2017. I can do the statistical tests using industry standard statistical software.
Here is a paper on Olympic sports that are subjectively evaluated.
The paper is by Joel Smith, a statistician from Minitab, a statistical software company…this person has no skin in the game, and is looking at the quality of the scoring alone.
https://blog.minitab.com/blog/fun-wi…cks-up-part-ii
The bottom line is that in Olympic equestrian competition, you cannot statistically differentiate between the rides that scored 1st, 2nd or 3rd place.
There is a large amount of information to provide in a single graph, so I’ll explain how to read it using the last event listed, Equestrian Individual Dressage GP Special, as an example. The gold bar extends from the 1st place finisher through the 3rd place finisher, meaning that while in real life the 1st place finisher was awarded a gold medal, statistically you cannot differentiate that person’s score from the individuals who finished 2nd and 3rd. The same would go for silver: you cannot differentiate the 1st and 3rd place riders from the 2nd
The USDF leadership may know about dressage, but they know little and seem unwilling to learn how to apply statistical tests to reach a conclusion.