|Date: ||Wed, 10 Jan 2007 22:27:14 -0800|
|Reply-To: ||David L Cassell <davidlcassell@MSN.COM>|
|Sender: ||"SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>|
|From: ||David L Cassell <davidlcassell@MSN.COM>|
|Subject: ||Re: factorial analysis|
|Content-Type: ||text/plain; format=flowed|
>The following excerpts I copied from:
>Factor analysis as a generic term includes principal component
>analysis. While the two techniques are functionally very similar and
>are used for the same purpose (data reduction), they are quite
>different in terms of underlying assumptions.
>There are still other methods of estimating communalities available in
>SAS. Interested readers should refer to SAS manual. Some method
>should be chosen, because SAS by default sets all prior communalities
>to 1.0, which is the same as requesting a principal components
>analysis. This default setting has caused misunderstanding among the
>novice users who are not aware of the consequence of overlooking the
>default settings. Many researchers claim to have conducted a common
>factor analysis when actually a principal components analysis was
>Hope this is what you mean,
>PS Se voce quer, eu posso tentar ajudar voce em portugues (that's what
>they speak in Brazil, David) tambem.
Dang. Mea Culpa. Mary (maryidahosas) pointed this out to me also.
I got a glitch in my wetware: I was thinking this post was from Spain,
while the 'joint inclusion probabilities' post wqas from Brazil.
I do know the difference between Portuguese and Spanish, and I really
can find Brazil on a map. :-)
David L. Cassell
3115 NW Norwood Pl.
Corvallis OR 97330
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