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st: Re: Dots in STATA Output


From   Kit Baum <baum@bc.edu>
To   "Can Huang" <huangcan@egi.ua.pt>
Subject   st: Re: Dots in STATA Output
Date   Wed, 9 Nov 2005 13:30:52 -0500

dots in Stata output mean missing values. The standard errors for those two coefficients could not be computed; presumably there is a problem of near-collinearity in the regressors (assuming this is regression output). The very small coefficient estimates also lead me to believe that your dependent and independent variables are on very different scales, which is generally not a good idea.

Please note that Stata is not an acronym like some other software packages. Stata is Stata.

Kit Baum, Boston College Economics
http://ideas.repec.org/e/pba1.html


On Nov 9, 2005, at 1:24 PM, Can Huang wrote:


Dear Dr. Christopher F Baum:

I am Can Huang, Ph.D candidate in Department of Economics, Management and Industrial Engineering, University of Aveiro, Aveiro, Portugal.

From IDEAS, I know you are extremely experienced in using STATA program. Would you please kindly point out where I can find the explanation for what the dots in the following STATA output result mean? I achieve the result in recent data analysis, but can not find the explanation in STATA's resources.

I am sorry that this email may come out of the blue. And answering me costs your precious time. I yet appreciate very much your valuable help on it.

Thank you in advance,

I send my best regards,

Can Huang



---------------------------------------------------------------------- --------
y | Coef. Std. Err. z P>|z| [95% Conf. Interval]
------------- +----------------------------------------------------------------
x1 | -2.82e-06 .0000226 -0.12 0.901 -. 0000471 .0000415
x2 | . 0000288 . . . . .
x3 | -2.67e-10 . . . . .
x4 | -.0000991 .0007542 -0.13 0.895 -. 0015773 .001379

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