Check if you should even be using a 6th order polynomial.

See the 'Over-specifying a regression' section in
Trendline coefficients
http://www.tushar-mehta.com/excel/ti...efficients.htm

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Tushar Mehta
www.tushar-mehta.com
Multi-disciplinary business expertise
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In article ,
says...
Hi,

If I evaluate my 6th order poly equation in Excell, it yields unexpected
results, but the eq works well for 1 to 5th order polynomial trend chart.
is there another way to work with 6th order poly eq. Any help would be
highly appreciated.

Thanks
Sanjay Limbikai