From: "Stouten, Pieter [R&D/0467]" PHARMACIA COM>
Date: 10 dec 2002
Subject: Expectation value of winning percentage
Yury Shpilev wrote:
>>a player scores 7/10, the average ELO of his 10 opponents being 1835
>>scoring 70 pct. means being +/- 112 ELO-points stronger than the
>>"opposition".
>>
>I not understand how calculate 112. That is 112 = Function(7/10, 1835).
>What should be this Function?
>
If I remember correctly, = 1 / (1 + 10 ^ (-/400)). Larry,
Asle, is that correct? If so, a score of 7/10 corresponds to 147 Elo points
difference.
Ciao,
Pieter