A Google with search term: polynomial regression "r squared" ; gave 37,000
hits
This one look useful for your purpose
http://www.stat.wisc.edu/courses/st333-larget/poly.pdf
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
www.stfx.ca/people/bliengme
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"Xiaoyoy Yun" <Xiaoyoy wrote in message
...
urgent to know the furmula of R-squared calculation for polynomial
regression.