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Re: st: regress
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: regress
Date
Tue, 27 Aug 2013 17:22:02 +0100
You asked a similar question on 14 August and got two replies
http://www.stata.com/statalist/archive/2013-08/msg00546.html
http://www.stata.com/statalist/archive/2013-08/msg00548.html
Why not consider and reply to those comments, which it seems remain pertinent?
Nick
[email protected]
On 27 August 2013 16:32, Rezgar Mohammed <[email protected]> wrote:
>
> I am a beginner in Econ. I would like to test the effect of some factors on
> the production of specific output using the Cobb-Douglass production
> function. I would like to know if you have any concerns about the results.
> Y represents output, x1 labor, x2 fertilizer, x3 land, x4 seed and x5 is
> capital. I wonder why the x1 coefficient is negative for example.
>
>
> reg lny lnx1 lnx2 lnx3 lnx4 lnx5
>
> Source | SS df MS Number of obs =
> 160
> -------------+------------------------------ F( 5, 154)
> =22942.46
> Model | 1.13880167 5 .227760334 Prob > F =
> 0.0000
> Residual | .001528829 154 9.9275e-06 R-squared =
> 0.9987
> -------------+------------------------------ Adj R-squared =
> 0.9986
> Total | 1.1403305 159 .00717189 Root MSE =
> .00315
>
> ------------------------------------------------------------------------------
> lny | Coef. Std. Err. t P>|t| [95% Conf.
> Interval]
> -------------+----------------------------------------------------------------
> lnx1 | -.0398971 .0008289 -48.13 0.000 -.0415346
> -.0382596
> lnx2 | 1.063405 .0033848 314.17 0.000 1.056719
> 1.070092
> lnx3 | -.0008994 .0005395 -1.67 0.098 -.0019652
> .0001664
> lnx4 | .0023421 .0024396 0.96 0.339 -.0024772
> .0071615
> lnx5 | .0025708 .000884 2.91 0.004 .0008245
> .0043171
> _cons | -.3304083 .0228141 -14.48 0.000 -.3754774
> -.2853393
> ------------------------------------------------------------------------------
>
> I tested for heteroskedasticity and auto-correlation but nothing changes.
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