Hi!
A colleague has been asking me about an idea of his to measure
deviations of individuals from a perfect correlation. It's not
something I know about, so I thought I'd ask for help.
He's using Spearman's rank correlation coefficients to measure
correlation and then wants to measure how far an individual departs
from concordance. This can be done with the difference between the
ranks. But he wants to compare across populations, which may have
different correlations and different sample sizes. I suspect this has
been done, but it's not my area of expertise, so can anyone point me
to some relevant literature? either doing this or something better!
Thanks in advance for any pointers!
Bob
--
Bob O'Hara
Biodiversity and Climate Research Centre
Senckenberganlage 25
D-60325 Frankfurt am Main,
Germany
Tel: +49 69 798 40216
Mobile: +49 1515 888 5440
WWW: http://www.RNI.Helsinki.FI/~boh/
Blog: http://network.nature.com/blogs/user/boboh
Journal of Negative Results - EEB: www.jnr-eeb.org
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