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statistics question (not really OT)

Posted By: Chuck Bower
Date: Tuesday, 12 July 2011, at 7:01 p.m.

In Response To: statistics question (not really OT) (Bob Koca)

If you want to measure "streakiness" you might look at how many times the winner of the previous game wins the next game.

This sounds like an unbiased way of investigating, as opposed to something like "how often would you expect a sequence of 81 games to have one streak of 11 or longer plus a completely different streak of 9 or longer, etc.?" 3 sigma is a lot, but it's not astronomical.

Prior to a few years ago the only contests involving players of both leagues were the single all-star game per year and the best-of-7 World Series. If someone wanted to test the idea that one league had an edge in skill, there wasn't much to go on. With inter-league play now, there is quite a bit more data, although testing that data is still not trivial given that the number of teams in the other league that a particular team gets to play is quite limited (and biased towards geographical rivalries), and even possibly the rule difference (pitcher bats in NL but not in AL).

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