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st: Re: a specific data management question
From 
 
"John F Hall" <[email protected]> 
To 
 
<[email protected]> 
Subject 
 
st: Re: a specific data management question 
Date 
 
Wed, 11 Aug 2010 09:15:28 +0200 
Don't know about Stata as I don't have it here, but in SPSS:
count x = tag (1) .
crosstabs x by firm .        <various options for %, stats>
What's the syntax in Stata?
John Hall
http://surveyresearch.weebly.com
PS (just seen Michael Mitchell's reply, but I'll send this anyway)
----- Original Message ----- 
From: Grace Jessie
To: [email protected]
Sent: Wednesday, August 11, 2010 5:50 AM
Subject: st: a specific data management question
Dear statalists,
I have a sample like the following,
   firm   tag
      1     0
      1     0
      1     1
      1     1
      1     3
      2     0
      2     1
      2     2
      2     3
      3     0
      3     0
I want to generate a varialbe counting the number of "tag==1" in each level 
of firm.
How to do it?
Thank you a lot!
Grace
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