From: F Duan <f.duan_at_yale.edu>

Date: Thu 15 Jul 2004 - 02:47:38 EST

R-help@stat.math.ethz.ch mailing list

https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide!

http://www.R-project.org/posting-guide.html

R-help@stat.math.ethz.ch mailing list

https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Jul 15 03:07:18 2004

Date: Thu 15 Jul 2004 - 02:47:38 EST

Thank you for your reminding. Could you tell me the addresses of STAT-L and
ALLSTAT lists?

By the way, I found Cronbach's alpha suggested by Prof. Baron might be the one I am looking for though it's not perfect.

Frank

-----Original Message-----

From: Peter Flom [mailto:flom@ndri.org]
Sent: Tuesday, July 13, 2004 16:06

To: r-help@stat.math.ethz.ch; f.duan@yale.edu
Subject: Re: [R] Is there a statistics that can summarize the correlation
formore than two random variables?

This seems more like a STATS question than an R question - asking on a list like STAT-L or ALLSTAT may result in more replies

Nevertheless, it seems to me that you need to describe (and maybe decide) what you mean by 'summarize' the correlations. Certainly the mean DOES summarize them, but is it the summary you want? Maybe, maybe not. Perhaps the median? Or a trimmed mean? Do you want to take the absolute values of the correlations, or not?

**HTH
**
Peter L. Flom, PhD

Assistant Director, Statistics and Data Analysis Core
Center for Drug Use and HIV Research

National Development and Research Institutes
71 W. 23rd St

www.peterflom.com

New York, NY 10010

(212) 845-4485 (voice)

(917) 438-0894 (fax)

>>> F Duan <f.duan@yale.edu> 07/13/04 2:34 PM >>>

Hi, R people,

I wonder if there is a statistics than can measure the correlation for
more

than two random variables, instead of computing the correlation
coefficient

matrix. If so, what R package should I use?

Right now I can only think of the mean of all pair-wise correlation
coefficients, e.g., (corr(x,y) + corr(x,z) + corr(y,z)) / 3 for three
random

variables (x, y, z).

Thanks a lot,

Frank

[[alternative HTML version deleted]]

R-help@stat.math.ethz.ch mailing list

https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide!

http://www.R-project.org/posting-guide.html

R-help@stat.math.ethz.ch mailing list

https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Jul 15 03:07:18 2004

*
This archive was generated by hypermail 2.1.8
: Fri 18 Mar 2005 - 02:36:23 EST
*