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Unread 13-05-2015, 13:52
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Re: "standard error" of OPR values

Quote:
Originally Posted by Wayne TenBrink View Post
Has anyone ever attempted a validation study to compare "actual contribution" (based on scouting data or a review of match video) to OPR values? It seems like this would be fairly easy and accurate for Recycle Rush (and very difficult for Aerial Assist). I did that with our performance at one district event and found the result to be very close (OPR=71 vs "Actual"= 74).

In some ways, OPR is probably more relevant than "actual contribution". For example, a good strategist in Aerial Assist could extract productivity from teams that might otherwise just drive around aimlessly. This sort of contribution would show up in OPR, but a scout wouldn't attribute it to them as an "actual contribution".

It would be interesting to see if OPR error was the same (magnitude and direction) for low, medium, and high OPR teams, etc.
I have done this in the past (2010, 2011, 2012, 2013). 2013 was pretty close. 2010 was pretty close at a given event though interesting strategies could result in interesting scores. 2011 was useful at District level of competition, but not very useful at MSC or Worlds. 2012, semi useful if using some sort of co-op balance partial contribution factor.

Someone did a study for Archimedes this year. I would say it is similar to 2011 where 3 really impressive scorers would put up a really great score, but if you expected 3X, you would instead get more like 2.25 to 2.5....
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