Ralph Baer writes... >John Haeussler posted a message where he stated that multiplying the >three factors that are used to calculated the RPI is equivalent to a >1/3, 1/3, 1/3 weighting. This is not true. I assume that John >reasoned that because one is multiplying three factors, they are all >treated evenly, and thus they each count a third. The mistake is that >the relationship is not linear when one multiplies factors. Yep...time for me to go back and refresh my basic algebra! :-) I have a pentium, but I can't blame my faulty reasoning on it. At least, I can't expect to get away with it. :-) Thanks. Please pass a towel so I can catch some of this egg. John H U Mich Add 1/3, 1/3, 1/3 to the weighting schemes that I'd like to see.