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Re: FW: st: Quantile regression
From
Maarten Buis <[email protected]>
To
[email protected]
Subject
Re: FW: st: Quantile regression
Date
Mon, 24 Sep 2012 13:58:34 +0200
On Mon, Sep 24, 2012 at 12:50 AM, Seed, Paul wrote:
<snip>
> 7. It looks as though you are warming up to saying "The effect exists
> for men, but not for women", based only on p<0.05 (M) and p>0.2 (F);
> or something similar.
<snip>
> This is a basic error known as comparing p-values; and is fR TOO common
> in published papers. Unless you carry out proper interaction tests, there
> is no justification for such conclusions.
For a detailed explanation of this point see:
Gelman, A and Stern, H. (2006) The Difference Between "Significant"
and "Not Significant" is not
Itself Statistically Significant. The American Statistician, 60(4):328--331.
Hope this helps,
Maarten
---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany
http://www.maartenbuis.nl
---------------------------------
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