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Unread 06-04-2008, 23:14
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AndyB AndyB is offline
Ambitiously Disappointing
AKA: Andy Burchardt
FRC #0171 (Cheese Curd Herd)
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Join Date: Mar 2005
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Re: Offensive Power Rankings for 2008

Quote:
Originally Posted by John Wanninger View Post
One reason for Offensive Power Rankings not matching reality is due to the fact that OPR’s are based on the averages of partners’ OPRs rather than actual contributions. Any deviation of a team from its ‘average’ contribution in a given match will always erroneously drive their partners’ OPR up or down.

These deviations can be large; it would not be unusual for a team to contribute 20 points in one match and then perhaps due to penalties, “contribute” -20 in the next. Given enough matches one might expect these errors to cancel each other out. However, when there is a limited number of matches (think: 8 coin tosses don’t always produce 4 heads and 4 tails) and the high degree of volatility, the error can be significant.

So while the OPR may be a good predictor, there's still no substitute for accurate, detailed scouting!
Spot on John. Congrats on the Woodie btw. You deserve it. Hope to catch up with you in Atlanta.
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