Thursday, May 28, 2009

Gambler's fallacy

If you flip a coin ten times, there is a good chance it will come up heads all ten times. Does this mean the coin is rigged? Probably no, and this is just a case of small sample size. Flip that coin 100 times, and you'll no doubt find that the coin comes up heads just about as many times as it does tails. Flip it 1,000 times, and the ratio of heads to tails should get even closer to 1:1. This is basically the Gambler's fallacy at its finest, and it seems the baseball world falls prey to it far too often. If we are to rise above it, however, it should come as no surprise, for instance, that the Yankees are in first place and the Royals are under .500 right now. Anomalies exist over a small sample size, but everything will eventually tend towards the expected result.

So on that note...

What the hell is up with Juan Pierre and when is it going to stop? Excluding tonight's game, Pierre currently has an EqA of .349. No, I am not making that up. Juan Pierre, the man who's never had an EqA of above .276, and hasn't been above league average (.260) since 2004, is putting up Albert Pujols-like numbers (career EqA of .345). Logic tells us that he'll eventually go back to being an exceptionally mediocre baseball player, but, for now, let's all bask in the supreme oddity of his current production.

No comments:

Post a Comment

Blog Archive