Dear Marianne,
this example was extracted from LISREL´s manual
(Structural Equation Modeling with the SIMPLIS command language) on page
53.
"(...) There are three sets of parameters in the
model: (1) the four factor loadings corresponding to the paths from Verbal and
Math to the observed variables, (2) The correlation between Verbal and Math, and
(3) the four error variances of the observed variables."
I hope this helps.
Best
regards,
Alexandre
Moura.
P.S. It may help to post your message on SEMNET.
http://bama.ua.edu/cgi-bin/wa?A0=semnet&D=1&H=0&O=D&T=1
- Original Message -
From:
Marianne
and Dimitrios
To: [EMAIL PROTECTED]
Sent: Saturday, August 18, 2001 12:49
PM
Subject: Min n CFA clarification
Let me clarify my previous posting. I want to do a confirmatory
factoranalysis to validate a questionnaire. There are 45 questions
(subjectsanswer using a 1-5 scale). Theoretically, there are 3 subscales
with15 items on each. In a CFA, that gives me 3 factors, 45
error terms,14 factor loadings on each of 3 factors, and 3 covariances. I
figurethat gives me 93 parameters. That's the part I need somebody to
verifyfor me. Have I counted the number of parameters correctly? If
so,then I should have at least a 1:10 and at best a 1:20 ratio
ofsubjects to parameters. Hence, the estimate of 930-1860 subjects.
Isthis correct?Thanks to all who are helping me with
this.Marianne=Instructions
for joining and leaving this list and remarks aboutthe problem of
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