|
alexstahn
South Africa
Posts |
 Posted - 05/14/2005 : 08:23:41 AM
|
Origin Version (Select Help-->About Origin): 7.0
Operating System:XP
Hi,
I would like to fit a data set which looks like two cumulative Gaussian distributions plus a straight line.
f(x)= c1*[F(x,0,SD1 - 0.5]+c2*F(x,mean2,SD2)+c3*z
where F(x;mean,SD) denotes the cumulative function of a Gaussian
with means and SDs.
Now I want the parameters c1, c2, c3, SD1, SD2, and mean2 of the fitting function to be determined by by minimization of a weighted least-squares index.
Does anybody have an indea how to proceed?
Alex
|
|
Fit curve of 2 cumulative Gaussian distributions
