You're going to need more than 1 variable. Cluster
analysis is a multivariable technique. In addition, a
sample size of only 21 is often too small for cluster
analysis.
SR Millis
--- Herve STOLOWY <[email protected]> wrote:
> Dear Statalisters:
>
> I am not familiar with cluster analysis and don't
> have an easy access to the manual on this topic.
> However, I have a group of 21 observations with one
> variable (a score) and would like to create three
> "homogeneous" groups.
>
> I found the -cluster kmeans- command. Here are my
> command lines:
>
> gsort - finance_aggregate
> cluster kmeans finance_aggregate, k(3)
>
> Each time I run these commands, I get a different
> result (i.e., a different clustering: the three
> groups are different). I looked at the help file but
> don't understand. (It might be related to the start
> option but I am not sure).
>
> Is there a way to obtain the same result everytime?
>
> Best regards
>
> Herve Stolowy
>
>
>
***********************************************************
> Professeur/Professor
> HEC Paris
> D�partement Comptabilit� Contr�le de gestion / Dept
> of Accounting and Management Control
> 1, rue de la Liberation
> 78351 - Jouy-en-Josas
> France
> Tel: +33 1 39 67 94 42 - Fax: +33 1 39 67 70 86
> mail: stolowy at hec dot fr
> web: http://studies.hec.fr/web/stolowy
>
> *
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> *
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>
Scott R Millis, PhD, MEd, ABPP (CN,CL,RP)
Professor & Director of Research
Dept of Physical Medicine & Rehabilitation
Wayne State University School of Medicine
261 Mack Blvd
Detroit, MI 48201
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