View Single Post
  #10   Spotlight this post!  
Unread 13-07-2015, 06:28
wgardner's Avatar
wgardner wgardner is offline
Registered User
no team
Team Role: Coach
 
Join Date: Feb 2013
Rookie Year: 2012
Location: Charlottesville, VA
Posts: 172
wgardner is a splendid one to beholdwgardner is a splendid one to beholdwgardner is a splendid one to beholdwgardner is a splendid one to beholdwgardner is a splendid one to beholdwgardner is a splendid one to beholdwgardner is a splendid one to behold
Re: "standard error" of OPR values

Quote:
Originally Posted by Oblarg View Post
Couldn't one generate an estimate for each team's "contribution to variance" by doing the same least-squares fit used to generate OPR in the first place (using the matrix of squared residuals rather than of scores)? This might run the risk of assigning some team a negative contribution to variance (good luck making sense of that one), but other than that (seemingly unlikely) case I can't think of why this wouldn't work.
We just tried this about a day ago. Unfortunately, there isn't enough data in a typical tournament to get reliable estimates of the per-team offensive variation. With much larger tournament sizes, it does work OK, but it doesn't work when you only have about 5-10 matches played by each team. I'll send you some of our private messages where this is discussed and where the results are shown.
__________________
CHEER4FTC website and facebook online FTC resources.
Providing support for FTC Teams in the Charlottesville, VA area and beyond.

Last edited by wgardner : 13-07-2015 at 06:32.
Reply With Quote