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Subject: Re: ELO performance?

Author: Robert Hyatt

Date: 12:25:52 05/22/99

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On May 22, 1999 at 12:53:55, Stefan Meyer-Kahlen wrote:

>Just two questions concerning ELO performance and probabilities:
>* How do I calculate my ELO performance if I get x percent out of y games
>against an opponent with z ELO points?
>* In which range is my own ELO rating with 95% probability after that match?
>I guess those are FAQs with 95% probability :-)
>   Stefan

Performance rating is trivial.  compute the following:

number_wins * (opponent's rating +400)
number_draws * opponent's rating
number_losses * (opponent's rating - 400)

add those up, divide by number of games.

there is no "95%" probability for a performance rating...

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