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st: Count observations


From   "Miguel Angel Duran Munoz" <maduran@uma.es>
To   statalist@hsphsun2.harvard.edu
Subject   st: Count observations
Date   Thu, 27 Jun 2013 19:13:34 +0200 (CEST)

Hi, Statalisters. I have a doubt that must have a very simple solution,
but I have not been able to find it. I have a variable where some numbers
appear more than once. And I would like to know the number of different
numbers; ie,  variable = 1 1 1 2 3 4 4 4..., so there are 4 different
numbers.

Thanks in advance.

Miguel.

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