st: Re: one sided test

["Christer Thrane" <ch-thran@online.no>]

How about:

use "C:\data\auto.dta", clear
(1978 Automobile Data)

. reg price mpg rep78

     Source |       SS       df       MS              Number of obs = 
69
-------------+------------------------------           F(  2,    66) = 
11.06
      Model |   144754063     2  72377031.7           Prob > F      = 
0.0001
   Residual |   432042896    66  6546104.48           R-squared     = 
0.2510
-------------+------------------------------           Adj R-squared = 
0.2283
      Total |   576796959    68  8482308.22           Root MSE      = 
2558.5

------------------------------------------------------------------------------
      price |      Coef.   Std. Err.      t    P>|t|     [95% Conf. 
Interval]
-------------+----------------------------------------------------------------
        mpg |  -271.6425   57.77115    -4.70 
0.000    -386.9864   -156.2987
      rep78 |   666.9568   342.3559     1.95   0.056     -16.5789 
1350.492
      _cons |   9657.754    1346.54     7.17   0.000       6969.3 
12346.21
------------------------------------------------------------------------------


. test  mpg- rep78=0

( 1)  mpg - rep78 = 0

      F(  1,    66) =    6.46
           Prob > F =    0.0134

----- Original Message ----- 
From: "y erc" <yerceylan@hotmail.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Wednesday, March 15, 2006 9:21 PM
Subject: st: one sided test



> Hi
>
> I am regressing y on x1, x2, using "reg" command. I would like to test if 
> b1<b2 (cefficents of x1 and x2) is significant. Can you please help me how 
> I can do this one sided test using stata? I mean is there a command for 
> this?
>
> Thanks
>
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