"Wuensch, Karl L." wrote (inter alia):
>
> If you have read Edwin Abbott's "Flatland," you might recognize that the
> same concept (a mean) which looked like a point in one dimensional space now
> looks like a line in two dimensional space. Then you would be ready to leap
> into three dimensional space and even beyond, into hyperspace, but you might
> want to sit down and have a good beer first. I promise that we shall travel
> that space before the semester is out (as soon as we get started on multiple
> regression).
Sorry? The natural generalization of a mean to a 2-dimensional space is
surely the vector mean, which is a point.
-Robert Dawson
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