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Re: st: Trimming data and statistics


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Trimming data and statistics
Date   Fri, 14 Apr 2006 22:21:11 +0100 (BST)

Akihito:
I am not surprised that the middel observation (median) moves if you remove the bottom 5% and the
top 10% of a distribution. The problem is how to justify it.
HTH,
Maarten

--- Akihito Tokuhara <akitoku4@hotmail.com> wrote:
> The fact is, when I test-trim the dataset, the median actually 
> moves away from zero.

--- Akihito Tokuhara <akitoku4@hotmail.com> previously wrote:
>> My way if to cut off completely all obs having values less than p5 and all
>> those having values bigger than p90.

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z214

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


		
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