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But over 10 or 20 at bats, it matters not. Incidentally, Mead (1984) calculated the standard deviation for batting averages for a 500 at bat season to be 20 points. Other standard deviation estimates by Mead were 6 home runs for a player averaging 36, 30 points in ERA for 250 innings pitched, and 6 wins for a team in a 162 game schedule. ................
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