st: constant term in xtreg, fe

["Mu Xu" <mystata@hotmail.com>]

Dear Statalisters:

I am running panel model, and have something unclear about the output 
produced by Stata. According to Stata manul, xtreg with fe option is 
estimated using OLS demeaned equation. WHat I am unclear about is how is the 
_cons computed, is it first to get fixed effect estimates, then get back to 
intercept like:

intercept = y_grand-mean -  (x_grand-mean)'B(fix_effect_estimates)? and its 
standard error therein?

Jun Xu
Dept. of Sociology
Indiana University

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