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RE: st: question about the interaction term


From   ZHVictor <victerzj2@hotmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: question about the interaction term
Date   Thu, 25 Apr 2013 15:36:12 +0000

Thank you!



Vic
----------------------------------------
> Date: Thu, 25 Apr 2013 17:34:08 +0200
> Subject: Re: st: question about the interaction term
> From: maartenlbuis@gmail.com
> To: statalist@hsphsun2.harvard.edu
>
> On Thu, Apr 25, 2013 at 5:27 PM, ZHVictor wrote:
> > You mentioned "but make sure that noone interprets the result that one effect is significant and the other is insifinicant as "the effect of A in group B=1 is different from the effect of A in group B=0"."
> > So how should I interpret? Because the interaction term is insignificant, I should say A has the same effect in B=0 vs B=1?
>
> Close, but not quite; you should say that you cannot reject the
> hypothesis that the effects are the same. Remember, with statistical
> tests you can never confirm a hypothesis, you can only reject or fail
> to reject. The latter is not the same as accepting. In essence failing
> to reject means that there is "absence of evidence" and this is not
> the same as "evidence of absence".
>
> -- Maarten
>
> ---------------------------------
> Maarten L. Buis
> WZB
> Reichpietschufer 50
> 10785 Berlin
> Germany
>
> http://www.maartenbuis.nl
> ---------------------------------
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