Groups > comp.graphics.apps.gnuplot > #376

Re: Correlation coefficient

From	David Marçal <davidufg@gmail.com>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Correlation coefficient
Date	2011-06-13 06:22 -0700
Organization	http://groups.google.com
Message-ID	<5f9b9ef2-4e51-4c6d-8951-83feb1b5e774@c20g2000vbv.googlegroups.com> (permalink)
References	<447e021d-67d8-4a1d-9268-67ddc983dc2a@j25g2000vbr.googlegroups.com> <95hkj6Fi8eU1@mid.dfncis.de>

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Thanks for answer Hans!

The correlation coefficient (R^2) is the Pearson's correlation
coefficient!
The output of gnuplot is something like this:

correlation matrix of the fit parameters:

                  a           b
a               1.000
b              -0.784  1.000

So, in a fit linear, my R^2 would be 0.784? This would be my
Perason correlation coefficient, is this correct?

Thanks again!

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Thread

Correlation coefficient David Marçal <davidufg@gmail.com> - 2011-06-11 09:15 -0700
  Re: Correlation coefficient Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2011-06-11 18:49 +0200
    Re: Correlation coefficient David Marçal <davidufg@gmail.com> - 2011-06-13 06:22 -0700
      Re: Correlation coefficient Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2011-06-13 16:04 +0200
        Re: Correlation coefficient David Marçal <davidufg@gmail.com> - 2011-06-14 07:11 -0700
          Re: Correlation coefficient Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2011-06-15 00:16 +0200

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