I would also like to be able to calculate the R-squared value for polynomial
equation as well. Same as the chart trendline feature produces, but with the
outcome in a cell rather than displayed on a chart.
--
Jay


"Jay" wrote:

I have an x and y data set for which I want to identify the parameters
(a,b,c) in the following second order polynomial equation. What Excel
functions can do this? I can chart the data and use the trendline function,
but I want to automatically calculate the parameters in individual cells that
I can reference in another formula. Thanks, J

y = ax^2 + bx + c

--
Jay