Re: [S] Pie diagrams anyone?

Alan M. Gross (
Fri, 13 Nov 1998 15:56:59 -0500 (EST)

My 2 cents.

I often create "first-cut" business cases, with 5 to 10 cash flows
for revenues and another 5 to 10 cash flows for costs. I use pie
charts for (automatically) looking at the relative contributions
of the NPVs of the various flows. I need to know which are big,
which are small, etc. Of the big ones, how many are there, and what
are their relative sizes? The fact that I can't accurately read
the small slices is a benefit. And yes, I can't accurately judge
exact relative sizes of the large ones, but as a statistician, I know
I haven't really estimated them precisely anyhow. The "second-cut" will
determine the larger flows more precisely. So in this case, I find
the short comings of pie charts actually work for my benefit!

Alan Gross
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