Author: Chris Carson
Date: 05:43:37 06/04/99
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On June 04, 1999 at 08:22:41, Arda Renkver wrote: >Could someone refer to a source as to how to get these +61 -53 etc margin of >error ratings points depending on the number of games played.Like in the new >Swedish list; 182 games for CM6000 has higher margin than 900 games played with >some other program.For example is just one game's margin of error in rating 800 >points? What is the maximum number of games required to be in the range of + and >- 0.000...1 etc? What statistical formula or concept used other than ELO >calculation as usual. I am not part of the SSDF, so I am speaking from a stats point of view only. Take a look at Shaums Outline on Stats. This will be the quickest way to get the formula. Look for Standard Error of Measure (SEM). This will also have a definition. I use this all the time, but I do not have the equation memorized (I do not fill my head with equations, I look them up). :) Any stats book should have this. Best Regards, Chris Carson
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