I vaguely recall seeing some reference to the use of an equilateral triangle as
a geometrcal representation for any three proportions p1, p2 and p3 adding to 1,
and perhaps also a vaguely (won't be exactly) elliptical confidence region for
the point representing (p1, p2, p3). Could someone please send me the reference
for this?
Thanks.
Robert G. Newcombe PhD CStat FFPH
Professor of Medical Statistics
Wales College of Medicine
Cardiff University
Heath Park
Cardiff CF14 4XN
Phone 029 2074 2329
Fax 029 2074 2898
http://www.cardiff.ac.uk/medicine/epidemiology_statistics/research/statistics/newcombe.htm
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