Sunday, April 04, 2010
The search for r=1
WPA correlates at 100% with wins.
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If the purpose is to get r=1, then it’s very easy to construct a stat to get r=1. But, for the love of God, that’s not the purpose of a stat.
The sole purpose of a stat is to illuminate, and to do so with as little bias as possible and as much logic as possible. If that means that you’ll end up with r=.32, then great, I’ll choose that to a stat with lots of bias and little logic and r=.99. For those who insist on the latter, then start and end your stat-making with R+RBI.
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