Hi,
ich have a List of measured valuepairs (w, AmpNorm) and a formula
f(w, a, b) = AmpNorm
i used nls to find the two coefficiants a and b:
ctfit.nls <- nls(AmpNorm ~ 1/(1 + (w * a - b /w)^2) ...)
R> ctfit.nls returns
Nonlinear regression model
model: AmpNorm ~ 1/(1 + (w * a - b /w)^2)
data: parent.frame()
a b
1.447e-05 9.386e+06
residual sum-of-squares: 0.005164
Number of iterations to convergence: 5
Achieved convergence tolerance: 1.271e-06
Now i want to find out the observational error. So i could write something
like
a = 1.4e-05 +/- 0.1e-05
or a = 1.4e-05 with 98% confidence
Thank you for reading so far and thank you for any help.
--
Jonas Stein <n...@jonasstein.de>
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