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Re: st: Re: one sided test


From   Richard Williams <Richard.A.Williams.5@ND.edu>
To   statalist@hsphsun2.harvard.edu, <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Re: one sided test
Date   Wed, 15 Mar 2006 15:55:26 -0500

At 03:44 PM 3/15/2006, Christer Thrane wrote:
. test  mpg- rep78=0

( 1)  mpg - rep78 = 0

      F(  1,    66) =    6.46
           Prob > F =    0.0134
But since he wants 1-tailed, he should also (a) make sure the difference is in the predicted direction, and if so (b) divide the reported sig. level by 2. So, in this case, the sig. level is .0134/2 = .0067.


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