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How To Calculate Polynomial Regression Coefficients

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Hi,

I wanted to know a way to calculate the polynomial regression coefficients in
excel as chart does. I have seen many help sites but it has not helped one of
it was JWALK.com which was good but did not work for me. I am using 4th
degree polynomial regression. The y and x values are as below.

X values 0.00 0.03 0.07 0.10 0.13 0.17 0.20 0.23 0.26 0.30 0.33
Y values 0.000 0.000 0.000 0.002 0.005 0.012 0.023 0.041 0.069 0.107 0.159

The coefficients from chart obtained are
c4 9.8202
c3 1.4485
c2 -0.1041
c1 0.0057
b 0.0000

I hope somebody can help

--
Joham


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What I want to do seems simple, but ...

Adding a polynomial trendline to an X-Y scatter chart is easy. How do I get the individual coefficients of that equation that is displayed on the chart into variables. I'm basically trying to fit a sixth-order polynomial to a set of measured data, and want to find the maximum value within a know range. If I know the coefficients of the polynomial regression - it's pretty simple from there.

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Hello.

Can anyone explain how Excel computes the coefficients step by step when carrying out the full regression procedure for several variances (multiple regression).

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Regards,

Chris

I have 201 data points and I want to fit a polynomial to the data using Solver.
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Hi Guys,

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I attached the file with the problem for you to look at.


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http://www.stfx.ca/people/bliengme/E...Polynomial.htm

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Hi,

I'm trying to do a Polynomial Regression, and managed to do it. However, I do get different values from those if I do a polynomial trendline with the Excel regression chart. I think I checked everything but still don't find my problem. Anyone has an idea what I'm doing wrong?
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Hi all
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Office 2007


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Can anybody tell me the theory Excel uses for this kind of regression?

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athanasioskolios