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st: Factor analysis yields cumulative proportion exceeding one


From   Marcello Pagano <pagano@hsph.harvard.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: Factor analysis yields cumulative proportion exceeding one
Date   Tue, 13 Mar 2007 07:05:44 -0400

FUKUGAWA, N. wrote:
> statalisters,
> 1 i made factor analysis and found proportion and eigenvalue of
> several factors were negative before rotation. cumulative proportion
> once exceeded 1 and then decreased to 0.
> 2 after rotation, i found cumulative proportion exceeded 1 and
> never be reduced.
> the data was standardized. i used commands "factor" and "rotate".
> is this problem of the data, programing, or stata's computation?
> thank you in advance.
> --
> FUKUGAWA Nobuya, Ph.D.
> nfukugawa@gmail.com
>
>   
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