Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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.
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index