Overview and Analysis of FIRST Stats

[araniaraniratul]

Originally Posted by Citrus Dad

We're digging into your stats paper. It's quite useful for thinking about this issue.

However you wrote on p. 9:

Defense - Average of Opponent’s Match Scores
One simple way to measure a team’s defensive power is to simply average their opponent’s match scores.

That's not correct--it measures the average offensive output of the opponents in those matches. This is the error also of the assertion that OPR-CCWM=DRP as a defensive metric. The DPR is actually the OPR of the opposing teams in those matches played. A measure of defense will measure how much that average output differs from the average offense of those opponents in other matches.

(I'll have other thoughts as I go through this paper.)

I felt like the intention was to take the differences from the opposing team's average scores? That would make sense and is fairly obvious. Otherwise, I'm fairly lost there too!