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st: RE: Re: How to calculate this conditional mean


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Re: How to calculate this conditional mean
Date   Wed, 1 Nov 2006 00:24:05 -0000

See the FAQ 

How do I create variables summarizing for each individual 
properties of the other members of a group? 
http://www.stata.com/support/faqs/data/members.html 

Nick 
n.j.cox@durham.ac.uk 

Quang Nguyen
 
> I have the following data set:
> 
> > Vessel                   Date  of landing                  Revenue
> > 1                           July/05/2004
> > 2
> > 3
> > .....
> >
> I would like to create a variable whose value is the average revenue
> of all other vessels having the same date of landing. For instance,
> for vessel 1, this variable will be the average revenue of all other
> vessels (not including vessel 1) whose date of landing is
> July/05/2004.

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