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Re: Correlation, significance and polynomial fitting
From: |
Sean O'Rourke |
Subject: |
Re: Correlation, significance and polynomial fitting |
Date: |
Thu, 28 Dec 2006 12:01:58 -0800 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.92 (darwin) |
Joseph Wakeling <address@hidden> writes:
> First off, given a correlation provided by cor(x,y), is there a
> means of estimating the statistical significance built in to
> Octave? Could anybody recommend a method of estimating it, if
> not?
Permutation usually works, i.e. estimate the probability that
abs(cor(x, y(randperm(length(y))))) >= abs(cor(x,y))
Sean