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st: Calculate average elements matrix (below the diagonal )
From
Dirk Enzmann <[email protected]>
To
[email protected]
Subject
st: Calculate average elements matrix (below the diagonal )
Date
Wed, 12 Sep 2012 10:27:37 +0200
When calculating averages of correlation coefficients (whether absolute
or not) you should consider transforming them to Fisher's z-scores first
(and the average back), see:
http://www.stata-journal.com/article.html?article=pr0041
Dirk
On 12.09.2012 08:33, statalist-digest wrote:
Date: Tue, 11 Sep 2012 10:34:19 +0200
From: John Antonakis<[email protected]>
Subject: st: Calculate average elements matrix (below the diagonal )
Hi:
I would like to calculate the average absolute correlations of a
correlation matrix. E.g.,
sysuse auto
corr price mpg rep78
mat A = r(C)
mat list A
This returns the following three correlations below the diagonal:
- -.45594895 .00655327 .40234039
Specifically, I would like to: obtain the average absolute values of the
below-diagonal elements:
i.e., dis (abs(-.45594895) + abs(.00655327) + abs(.40234039))/3
Thanks!
J.
--
========================================
Dr. Dirk Enzmann
Institute of Criminal Sciences
Dept. of Criminology
Rothenbaumchaussee 33
D-20148 Hamburg
Germany
phone: +49-(0)40-42838.7498 (office)
+49-(0)40-42838.4591 (Mrs Billon)
fax: +49-(0)40-42838.2344
email: [email protected]
http://www2.jura.uni-hamburg.de/instkrim/kriminologie/Mitarbeiter/Enzmann/Enzmann.html
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