Author: Uri Blass
Date: 12:54:17 04/26/02
Go up one level in this thread
On April 26, 2002 at 09:29:26, Gian-Carlo Pascutto wrote: >Given a score from a series of games, y, we can calculate >the ELO difference between the two players as: > >x = -400*log((1-y)/y) > >My question is now, how do we calculate the error margins >on this value? > >-- >GCP First you need to calculate the error margins for y and after it you calculate upper and lower bound for x based on the upper and lower bound for y and your formula. I believe that a good estimate for the error margin for y is sqrt(y(1-y))/sqrt(N). Uri
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