Sorry, which publication are you referring to in "Long 1998"?
Martin Weiss
_________________________________________________________________
Diplom-Kaufmann Martin Weiss
Mohlstrasse 36
Room 415
72074 Tuebingen
Germany
Fon: 0049-7071-2978184
Home: http://www.wiwi.uni-tuebingen.de/cms/index.php?id=1130
Publications: http://www.wiwi.uni-tuebingen.de/cms/index.php?id=1131
SSRN: http://papers.ssrn.com/sol3/cf_dev/AbsByAuth.cfm?per_id=669945
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Verkuilen, Jay
Sent: Monday, March 03, 2008 7:54 PM
To: [email protected]
Subject: RE: st: discriminatory power of a probit model
Maarten buis wrote:
>>The problem with the proportion correctly classified is that it
depends on the distribution of your dependent variable: if success is
rare and everybody is classified as a failure than the proportion
correclty specified is still large.<<
Indeed this is a big problem with the whole classification table
approach. Long (1998) discusses this point quite nicely but if you want
to read one of the classics, look at the article by Meehl and Rosen
(1955) (Psych. Bull.) where the base rate problem was first probed in
detail.
Jay
*
* 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/
*
* 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/
