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st: RE: RE: RE: Correlation coefficient between discrete and continuous variables


From   "Lachenbruch, Peter" <Peter.Lachenbruch@oregonstate.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: RE: Correlation coefficient between discrete and continuous variables
Date   Thu, 20 Nov 2008 13:24:02 -0800

Yes, I think you're right.  A bit like a manova

Tony

Peter A. Lachenbruch
Department of Public Health
Oregon State University
Corvallis, OR 97330
Phone: 541-737-3832
FAX: 541-737-4001


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Verkuilen,
Jay
Sent: Thursday, November 20, 2008 12:24 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: RE: RE: Correlation coefficient between discrete and
continuous variables

Tony Lachenbruch wrote:

>>When the discrete variable is a dichotomy, the test for the
correlation
is the same as the two-sample t-test with the dichotomy as the 'by'
variable.  I've never looked at the case for discrete variables with k
categories.  A little algebra could be fun and illuminating...  (or
not)>>

Isn't this going to be a special case of discriminant analysis with one
continuous predictor?

JV
 

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