On 30 Oct 2000 06:02:56 -0800, [EMAIL PROTECTED] (Conn, Judith) wrote:
> Hi!
>
> My question is on a test to compare CVs. The CVs are computed using the
> same data but two different variance methods and I have to compare them.
> Been told there is no real test and as of yet have not checked the Current
> Index of Stat books but wondered if someone in the group has had this
> problem. Someone suggested that take one of the Cvs and make it the
> population CV and do 95% C.I. around that. Any suggestions?? Thanks.
>
I think you have a serious problem with your *question*.
You say you have two ways of computing the variance. That is *not*
the same as having two samples with separate coefficients-of-variance.
It sounds to me as if you have pairs of estimates, and you *might* be
fuzzing up the issue of you don't look directly at those pairs. I'd
say: plot the pairs, and also plot the pairs of CVs. You go with the
CVs if that simplifies the discussion; else, not.
--
Rich Ulrich, [EMAIL PROTECTED]
http://www.pitt.edu/~wpilib/index.html
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