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st: Cluster analysis


From   jdubas@nd.edu
To   STATA list <statalist@hsphsun2.harvard.edu>
Subject   st: Cluster analysis
Date   Tue, 18 May 2004 11:06:03 -0500

I am trying to do a kmeans cluster analysis, and I have a couple issues that
keep coming up.  First, I use the default random start option and get certain
results. Then I used the segments start option, and the results are quite
different.  Is there any explanation for this?

Also, I tried to use group(varname) as a start option, but when I run this, I
keep getting an error message that the variable I chose" does not define k (in
my case, 5) groups".  How can I fix this?

Thanks so much for your input

Justin


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