04 Feb 08
Originally posted by droflaceIt is useless as a comparison value because it is only intended as statistical device. It is being used for comparison purposes in this thread which defeats the purpose of a chess rating.
performance rating is not useless, it shows the rating that would be required for you to have an expected score in the tournament that was exactly equal to the score you achieved in the tournament. It shows how well you played in that tournament, but obviously it is going to be more erratic than a persons actual rating which measures your combined performance over a much longer period of time.
04 Feb 08
Originally posted by ludzall chess ratings are statistical devices. I would think that one of the main purposes of any rating system (chess, cricket, tennis, golf etc.) is to compare competitors, and it does a fairly good job of doing that.
It is useless as a comparison value because it is only intended as statistical device. It is being used for comparison purposes in this thread which defeats the purpose of a chess rating.