A trendline is a best fit through a series of points, and as such has no
actual data points of its own. You can use LINEST to get the
coefficients into the worksheet, and calculate trendline Y values for X
values of interest. Bernard Liengme has hints for working with
polynomial regression and LINEST:
http://www.stfx.ca/people/bliengme/ExcelTips/Polynomial.htm
- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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