Pearson's correlation coefficient? - R-help

Wed, Nov 20, 2002 8:47 PM #

How do I get non-squared correlation coefficient in some more
sensible way than

	sqrt(summary(lm(y~x))$r.squared)?

Thanks

	Matej

Matej Cepl, matej at ceplovi.cz,
Finger: 89EF 4BC6 288A BF43 1BAB  25C3 E09F EF25 D964 84AC
138 Highland Ave. #10, Somerville, Ma 02143, (617) 623-1488
 
The difference between death and taxes is death doesn't get worse
every time Congress meets
    -- Will Rogers

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Andrew C. Ward

Wed, Nov 20, 2002 9:04 PM #

Matej, try the following
   > cor.test(x,y)$estimate

Regards,

Andrew C. Ward

CAPE Centre
Department of Chemical Engineering
The University of Queensland
Brisbane Qld 4072 Australia
andreww at cheque.uq.edu.au


Quoting Matej Cepl <matej at ceplovi.cz>:

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Brian Ripley

Wed, Nov 20, 2002 11:59 PM #

On Thu, 21 Nov 2002, Andrew C. Ward wrote:

or just cor(x, y).

That's lost the sign, BTW.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Matej Cepl

Thu, Nov 21, 2002 5:40 AM #

ripley at stats.ox.ac.uk wrote:

Thanks, that's it.

You are right, of course.

Matej

Matej Cepl, matej at ceplovi.cz,
Finger: 89EF 4BC6 288A BF43 1BAB  25C3 E09F EF25 D964 84AC
138 Highland Ave. #10, Somerville, Ma 02143, (617) 623-1488
 
The main idea of the pope's asking for forgivness was not to be
afraid of the truth. DO NOT BE AFRAID OF TRUTH! We have to have
faith in the God's governing power to be able not to be afraid.
    -- On NPR The Connection from March 13, 2000

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