Comparison of two independent coefficients of reliability ---------------------------------------------------------
^feldti^ rel1 rel2, N1() n2() K1() k2()
Description -----------
The reliabilities of two tests (^rel1^ & ^rel2^) are compared between two samples of ^n1^ & ^n2^ subjects. The tests are ^k1^ and ^k2^ items long respectively. The independence of the samples is assumed.
If ^n2^ is not specified, the samples are supposed to be of equal sizes. If ^k2^ is not specified, the tests are supposed to be of equal lengths.
Reference ---------
Feldt L.S. "A test of the hypothesis that Cronbach's alpha or Kuder- Richardson coefficient twenty is the same for two tests", Psychometrika, 1969, 34(3), pp363-373.
Also see --------
STB: ^alpha2^ in sg66 (STB-35) Manual: ^[R] alpha^ On-line: help for @factor@