http://smackaay.com/2009/04/29/3-point-quadratic-regression-formula/ A showcase of Steven Mackaay's stuff Mon, 08 Feb 2010 07:58:32 +0000 hourly 1 http://wordpress.org/?v=3.0 http://smackaay.com/2009/04/29/3-point-quadratic-regression-formula/comment-page-1/#comment-6454 smackaay Mon, 09 Nov 2009 02:40:54 +0000 http://smackaay.com/?p=572#comment-6454 I calculated it backwards with gaussian elimination. When I was finished, I plugged it into Mathematica in order to simplify it. Turns out that you can solve it through Mathematica as well, which is what I did for the cubic, 4 point equation. I think what you're looking for is the Least Squares method, unless of course you're looking for a solution for the variables to the 10th order. :) http://en.wikipedia.org/wiki/Least_squares I calculated it backwards with gaussian elimination. When I was finished, I plugged it into Mathematica in order to simplify it. Turns out that you can solve it through Mathematica as well, which is what I did for the cubic, 4 point equation. I think what you’re looking for is the Least Squares method, unless of course you’re looking for a solution for the variables to the 10th order.
http://en.wikipedia.org/wiki/Least_squares

]]> http://smackaay.com/2009/04/29/3-point-quadratic-regression-formula/comment-page-1/#comment-6451 John Mon, 09 Nov 2009 00:11:23 +0000 http://smackaay.com/?p=572#comment-6451 Where did you find this 3 point regression formula? I am trying to figure out the formula for 11 point regression. E-mail me at john_withey@my.hnu.edu, if anybody on these boards has the formula to calculate such. thanks. Where did you find this 3 point regression formula? I am trying to figure out the formula for 11 point regression. E-mail me at john_withey@my.hnu.edu, if anybody on these boards has the formula to calculate such. thanks.

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