Recent content by Jakub

I can't really change the type of function since I need it in the form y = A1*exp(-x/t1) + A2*exp(-x/t2) + y0 The one that did not converge has too big bonds y0 -21656,44468 ± 215638,46693 A1 3,1442 ± 0,02977 t1 70,10402 ± 1,29334 A2 21657,39982 ± 215638,46692 t2 4,32545E7 ±...

I can't understand the exponential function fit for this set of data works well: ExpDec2 exponential function fit 0 3,04 10 2,77 20 2,52 30 2,27 40 2,09 50 1,92 60 1,75 70 1,62 80 1,51 90 1,43 100 1,36 110 1,29 120 1,24 130 1,19 140 1,14 150 1,09 160 1,05 170 1,02 180 0,99 190 0,97 200 0,95 210...

Thanks for the explanation. I am working with tapered optical fibers. For a sw simulation I need to approximate them with a function. My idea was that the SW would do the best fit possible, and the error would be the fit minus the actual measured value (input value). I thought this is where was...

The Origin SW does it all ... just by looking at the fitted plot, I can't understand the small reduced chi sq

Hello everyone, I would be happy if someone explained the small reduced chi squared value to me. I have fitted a set of measured data with an exponential function, which I need for some sw calculations. The fit seams great, the origin sw also provides the reduced chi squared, but it is very...