[R] general question about use of list

[John Kane]

You might find the usenet groups
sci.stat.math
sci.stat.consult

to be what you're looking for.
--- Y G <gatemaze at gmail.com> wrote:

> Hi,
> 
> is this list only related to R issues or it has a
> broader context regarding
> questions and discussions about statistics. Is there
> any other email list or
> forum for that? For example, I have a question
> regarding variance. It is
> defined as:
> variance = sum(sq(Xi-mean)) / (N-1)
> and I never understood why not define it as
> variance = sum(absolute(Xi-mean) / (N-1)
> 
> I read somewhere that this cannot be differentiated
> on 0. But, why is it
> necessary to be able to differentiate it?
> 
> Thanks.
> 
> 	[[alternative HTML version deleted]]
> 
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