kshaw
1
Hi rooters,
I have a linear fit (pol1) to some data points and I want to find out the correlation coefficients between the fit
parameters P0 and P1.
I saw there is the function GetCorrelationFactor but i suspect this gives the correlation between X and Y. Any ideas?
Thanks
Kate
kate,
You can do this way:
- Given our data points, (x,y), and your linear fit y=ax+b, then calculate y_{estimate} = a*x+b, thus you have many estimated points (x, y_{estiamte})
- Plot a TGraph : (y, y_{estimate})
- Use GetCorrelationFactor to get their correlation.
Zhiyi.
kshaw
3
Great this worked.
Thanks very much.