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Re: st: RE: RE: A math question


From   David Hoaglin <dchoaglin@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: RE: A math question
Date   Fri, 21 Dec 2012 10:52:36 -0500

The median is a function of a distribution.  You did not specify the
distribution of x.  If you explained the context for your question, we
might be able to shed better light.

David Hoaglin

On Fri, Dec 21, 2012 at 10:42 AM, CJ Lan <CJ@jupiter.fl.us> wrote:
> Al,
>
> I think the "median" is a function, just like the "mean" is a function, not just a number.
>
> BTW, the derivative of abs(x^3) should be 3*x*abs(x) because the derivative can be derived as
>  abs(x^3)/(x^3)*(3*x^2) = 3*abs(x)*x^2/x = 3*x*abs(x).
>
> I wish others could shed a light too?  Thx.
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