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st: tabulation


From   ncdcta00@uniroma2.it
To   statalist@hsphsun2.harvard.edu
Subject   st: tabulation
Date   Sat, 17 Nov 2007 17:29:26 +0100

Dear Stalist I have this a dataset:
id postalcode region state
1 01 2 2
1 01 2 2
1 02 2 2
2 05 8 9
2 05 8 9

My id are people that I have , if make the tab by postalcode I have 3 postalcode
with 2 id with a total of obs = 5
If I want know how many person are by postal code, How can I do this?
Thanks a lot in advance for your comments.



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