"Aaron M. Renn" <arenn@xxxxxxxxxxxxxxx> wrote in message
news:dehvv6$qro$1@xxxxxxxxxxxxxxxxx > I've got a person here at work who wants to estimate a scale curve through
> two points. The axes are $/unit (y) and total number of units (x). What
> this graph is supposed to show is that for each doubling of the number of
> units you get a decreasing incremental reduction in cost. He claims there
> is some standard equation for this that estimates the curve based on
> two points, but I've been unable to locate any such equation through
> googling. Can anyone help?
>
> --
> Aaron M. Renn (arenn@xxxxxxxxxxxxxxx) http://www.urbanophile.com/arenn/ >
You could try a(e^(-bx)) = y. And solve for a and b. But this is not a
standard curve. You could for example have a constant added to the above and
probably should. It may or may not happen to fit your data well.
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