Calculating centroids
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centroid ^varlist^ if ^exp^ in ^exp^ [weight], group(^groupvar^) [dist(#)]

The program ^centroid^ takes as input a set of variables and a grouping 
variable, which is designated ^groupvar^.  ^Groupvar^ indicates into which 
group each case falls.  As output, it generates a set of group ^centroids^,
which are means of each variable in ^varlist^, and a set of distances, which
indicate how far each case is from each centroid.

Output is as follows:
Let g be the number of levels of ^groupvar^.
Let v be the number of variables in ^varlist^.

CENTij, for i=1,...,g;j=1,...,v: 
		The mean of the ith group on the jth variable. 

DISTi, for i=1,...g:
		The distance of each case from the ith centroid.


Distance option
---------------
"Distance" is calculated by the Minkowski metric with parameter specified
by the dist(#) option.  If you do not specify this option, Euclidean distance
is assumed (#=2).  Allowable values are greater than or equal to 1.


Author's contact information is in the ado file.
