[Rasch] Separation, G vs Strata, H

Mike Linacre (RMT) rmt at rasch.org
Sat Sep 20 21:23:55 EST 2008


Anthony:

Please see www.rasch.org/rmt/rmt163f.htm - "Number of Person or Item Strata 
(4G+1)/3"

Mike L.

You wrote:
>G = sqrt(Rel./(1-Rel.))
>H = (4G + 1)/3
>What is the difference between the two as they result in different indices?
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