Statalist The Stata Listserver

[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

Re: st: Trimming data and statistics

From   Maarten buis <>
Subject   Re: st: Trimming data and statistics
Date   Fri, 14 Apr 2006 22:21:11 +0100 (BST)

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.

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

--- Akihito Tokuhara <> 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

Switch an email account to Yahoo! Mail, you could win FIFA World Cup tickets.
*   For searches and help try:

© Copyright 1996–2015 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index