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st: Re: Fixed effects


From   "Winky K O Ho [BRE]" <Winky.K.O.Ho@inet.polyu.edu.hk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: Fixed effects
Date   Mon, 19 May 2008 15:01:37 +0800

Dear Statalisters,

Good day. I am currently using a legal copy of Stata 10. I wanna estimate a reduced form equilibrium model  (with fixed effects) of real estate investments for 36 cities for 5 years. In the first column of my data file, I put Regions in the first cell, and then listed the cities one by one. Then I typed 

xtset regions

The response is
varlist:  regions:  string variable not allowed
r(109);

However I can do the same thing with my friend's Stata 8.

I also try to do "xtset all variables" one by one. Then I typed 

xtreg y x1 x2 x3 x4 x5, fe

The response is

insufficient observations
r(2001);

Is there anyone who can tell me how to fix this problems? Thank you in advance.


Best regards,

Winky




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