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Re: st: STATA 10 help


From   Herb Smith <hsmith@pop.upenn.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: STATA 10 help
Date   Fri, 7 Aug 2009 15:52:09 -0400 (EDT)

Kensuke,

You need to work at more firms or control for fewer variables.

I read this as suggesting that you have worked at six firms and are trying to control for five variables (plus whichever represents you) ; and then there is a constant.

Not the best place for multiple regression.

On Fri, 7 Aug 2009, Shimokawa, Kensuke wrote:

Dear Statalist subscribers,

I am currently trying to make a simple regression model where I include myself as a variable influencing the firms revenue. This is for a small presentation I need to make to a firm for a interview process. I have run a multiple regression, but I am getting peculiar results where some of my coefficient variables are dropped and I don't get any numerical values for the certain columns (see below). I will appreciate if I could get your help as soon as possible. Thank you.

regress Rev GDP7 DJ NK FTSE UE7 OP

     Source |       SS       df       MS              Number of obs =       6
-------------+------------------------------           F(  5,     0) =       .
      Model |  48697133.3     5  9739426.67           Prob > F      =       .
   Residual |           0     0           .           R-squared     =  1.0000
-------------+------------------------------           Adj R-squared =       .
      Total |  48697133.3     5  9739426.67           Root MSE      =       0

------------------------------------------------------------------------------
        Rev |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
       GDP7 |  (dropped)
         DJ |    42.9947          .        .       .            .           .
         NK |   81.30229          .        .       .            .           .
       FTSE |   287.0798          .        .       .            .           .
        UE7 |  -2196.796          .        .       .            .           .
         OP |   35.09357          .        .       .            .           .
      _cons |  -27760.23          .        .       .            .           .
------------------------------------------------------------------------------




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Herbert L. Smith
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