Fit function and uncertainty

Hi everybody,

i used the 'fit' functin to fit data to a gauss function

'a + b1 * exp(-(x-x1)^2/(2*sigma1^2)) + b2 * exp(-((x-x2)^2)/(2*(sigma2^2))'

and got a centroid at x1 and x2.

The ouput is:

a = 0.9905 (0.8866, 1.094)

b1 = 3.294 (2.896, 3.693)

b2 = 4.09e+04 (-1.652e+11, 1.652e+11)

sigma1 = 39.21 (33.55, 44.87)

sigma2 = 184.2 (-1.948e+07, 1.948e+07)

x1 = 597.5 (592.1, 602.9)

x2 = -1090 (-2.408e+08, 2.408e+08)

(forget about x2)

and:

sse: 1.8839e+03

rsquare: 0.2572

dfe: 1021

adjrsquare: 0.2528

rmse: 1.3584

Does any of these figures give me the uncertainty of the centroid?

Thanks for your help.

Best Chris

Answer 1

[Alex Sha]

Hi, attach your data file please, if possible.

Answer 2

[Christos Papadopoulos]

Hi

i'm sorry i can't. :/

but do you know what all these figures tell me?

Best

Chris