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st: RE: [Fwd: re: simultaneous equations]


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: [Fwd: re: simultaneous equations]
Date   Sun, 8 Mar 2009 18:08:51 -0000

I can't add to what Stata is telling you. Do consider how much
information you are providing us: not much!

Stata is telling you that you have "insufficient observations". In some
fields of science, that implies that you should go out and collect more
data. In economics, it more usually implies thinking of a different
model. 

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

mmolina@uniroma3.it

Now I have another problem: as I add more variables, I received the
message "insufficient observations". Could you please tell me how to
deal
with this?

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