Author: Robert Hyatt
Date: 18:27:10 12/01/97
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On December 01, 1997 at 18:13:41, Uwe Immel wrote: >How could it be, that the possible tolerance (+) for rebel9 is 42 >points, although he had 10 games more played than hiarcs 6? >The more games a program played, the lower should be the tolerance, >so it should be just the other way. > >> SSDF RATING LIST 1997-11-30 57982 games played by 176 computers > Rating + - Games Won Oppo > ------ -- --- ----- --- ---- >> 1 Hiarcs 6.0 Pentium MMX 200 MHz 2544 41 -39 327 66% 2424 >> 2 Rebel 9.0 Pentium MMX 200 MHz 2543 42 -39 337 72% 2375 can also be caused by the ratings of your opponents. If you play a wide range of ratings, your variability will be higher than if you play a narrower range of ratings for your opponents... basic sampling theory likes the standard deviation of the population to be small. If it is large, it produces more variability in the estimated result as well...
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