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 <[email protected]> wrote:
> The fact is, when I test-trim the dataset, the median actually
> moves away from zero.
--- Akihito Tokuhara <[email protected]> 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/
-----------------------------------------
___________________________________________________________
Switch an email account to Yahoo! Mail, you could win FIFA World Cup tickets. http://uk.mail.yahoo.com
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/