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Re: problem with cov(X)?
From: |
Daniel X. Pape |
Subject: |
Re: problem with cov(X)? |
Date: |
Sun, 16 Aug 1998 11:34:29 -0500 |
John Day writes:
> I don't know if I can help you, but, since I use cov(X) a lot,
> I'd be interested in what you think is wrong with it.
I'm sorry everyone. My mistake.
I thought that the output from cov(X) was off, but that's because I
didn't look at the source before mailing. When I did, I realized that
Octave's cov(X) function was dividing things by (sample size - 1) and
when I was calcuating the covariances manually, I was only dividing by
(sample size).
So, it was not wrong - I was.
Thanks for the help.
Dan