RE: [R] Is there a statistics that can summarize the correlation for more than two random variables?
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:[EMAIL PROTECTED] Sent: Tuesday, July 13, 2004 16:06 To: [EMAIL PROTECTED]; [EMAIL PROTECTED] 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 [EMAIL PROTECTED] 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]] __ [EMAIL PROTECTED] 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 __ [EMAIL PROTECTED] 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
RE: [R] Is there a statistics that can summarize the correlation for more than two random variables?
http://www.jiscmail.ac.uk/lists/ALLSTAT.html On Wed, 2004-07-14 at 17:47, F Duan wrote: 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:[EMAIL PROTECTED] Sent: Tuesday, July 13, 2004 16:06 To: [EMAIL PROTECTED]; [EMAIL PROTECTED] 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 [EMAIL PROTECTED] 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]] __ [EMAIL PROTECTED] 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 __ [EMAIL PROTECTED] 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 __ [EMAIL PROTECTED] 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] Is there a statistics that can summarize the correlation for more than two random variables?
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]] __ [EMAIL PROTECTED] 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
Re: [R] Is there a statistics that can summarize the correlation for more than two random variables?
On 07/13/04 14:34, F Duan wrote: 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? One possibility is Cronbach's alpha, which is in the psy package. It is describe a little in our Notes on R for psychology ... (linked from the R page below), written befpre psy was available. Jon -- Jonathan Baron, Professor of Psychology, University of Pennsylvania Home page:http://www.sas.upenn.edu/~baron R search page:http://finzi.psych.upenn.edu/ __ [EMAIL PROTECTED] 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
