On Sun, 30 Nov 2008 14:24:28 -0800 (PST), Wimpie
wrote:

I know Excel is not the perfect tool
to do this, but I did similar things with reasonable results.

Hi Wim,

After following Jim's link, and reading it to considerable depth, I
wouldn't trust Excel to do anything more than 3rd grade arithmetic.
Even then, there are too many examples to suggest I still could get
burned. Take heed of their cautions that "reasonable results" are not
always accurate results.

Could the financial meltdown be attributable to rounding errors in
spreadsheets?

Make the investment and go with R.

73's
Richard Clark, KB7QHC