Denis,


> Are you perhaps thinking of conjoint analysis?
>
>
Thanks, but as far as I can make out, having just looked at conjoint
analysis,  it looks like some form of discriminant analysis, which is not
what I am looking for.

 I only have two variables cost and value. I am ignoring how you establish
the value, I just need to be able to assess every possible combination of
costs and value. Its common technique in the Decision Analysis literature
(and specialist Decision Analysis software), but I have never seen it given
a Specific name. But of course it may have several names, and be used across
different disciplines for different purposes.

Its such a common tool, that I was hoping that someone would instantly
recognise, what I was describing, and be able to say that it was available
in a particular package.

But I had never looked at conjoint analysis before, so nice to know it
exists.

Graham

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