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st: Replace value for some observation with average values of some other observations?


From   Stata Chris <statachris@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Replace value for some observation with average values of some other observations?
Date   Wed, 18 Jan 2012 13:16:20 +0100

Dear list members,

Suppose I have a dataset with variables id and outcome.
Now for the observation with id=1 I want to replace the value of the
outcome by the average outcome values of the observations with id=2
and id=3.

I thought of

replace outcome=mean(outcome[id==2],outcome[id==3]), but this does not
quite work.

Would anyone know how to do this correctly?

Thank you so much,
C
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