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st: test for clustering


From   "Ashim Kapoor" <ashimkapoor@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: test for clustering
Date   Wed, 1 Oct 2008 17:34:27 +0530

new_lo_axis  lo_start_node
12450	1
12639	1
12798	1
12880	2
12892	2
12895	2
12908	3
12932	3
13074	4
13343	4
13689	4
14123	5
14123	5

xtile lo_start_node= new_lo_axis , nq(5)

Hello everyone,

I wish to find out if some points in the data are closer to the
others. I don't know how to check for this. I tried to split up the
data into 5-xtiles by the above command. It does work to some extent ,
but is there a way I can say " point's close to each other are ONE
point only ". I guess this is LESS a question on stata and more a
question on statistics / math. Any tips  ?

Thank you,
Ashim.
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