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Are your 15-20 questions meant to represent a single construct?
e.g., Spelling ability, attitudes, values?
In other words, are these "items" meant to be summarized into a scale?
Do they have the same response scale? e.g., dichotomies or likert?
Dianne Worth wrote:
> I have a regression model with (mostly) identifiable IVs. In
> addition,
> I want to examine another set of responses and have about 15-20
> questions that relate to that new 'factor.' Some years ago, I took a
> class in
> which we performed data reduction. Of course, I no longer have a
> textbook with that information.
>
> Question: Should I perform Principal Components and then Factor
> Analysis to determine the new constructs? I (barely) use SAS and can
> never
> understand the directions. A book on SPSS was more helpful.
>
> Appreciate any help --
>
> DW
>
>
>
>
> -----------------------------------------------------------------------
> Do You Yahoo!?
> Yahoo! Mail Personal Address - Get email at your own domain with
> Yahoo! Mail.
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Are your 15-20 questions meant to represent a single construct?
<br>e.g., Spelling ability, attitudes, values?
<br>In other words, are these "items" meant to be summarized into a scale?
<br>Do they have the same response scale? e.g., dichotomies or likert?
<br>
<p>Dianne Worth wrote:
<blockquote TYPE=CITE>I have a regression model with (mostly) identifiable
IVs. In addition,
<br>I want to examine another set of responses and have about 15-20
<br>questions that relate to that new 'factor.' Some years ago, I
took a class in
<br>which we performed data reduction. Of course, I no longer have
a
<br>textbook with that information.
<p>Question: Should I perform Principal Components and then Factor
<br>Analysis to determine the new constructs? I (barely) use SAS
and can never
<br>understand the directions. A book on SPSS was more helpful.
<p>Appreciate any help --
<p>DW
<br>
<br>
<br>
<p>
<hr size=1><b>Do You Yahoo!?</b>
<br><a href="http://personal.mail.yahoo.com/?.refer=mailiyfoot">Yahoo!
Mail Personal Address</a> - Get email at your own domain with Yahoo! Mail.</blockquote>
</html>
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