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Asking NonlinearRegression

  • To: mathgroup at smc.vnet.net
  • Subject: [mg88733] Asking NonlinearRegression
  • From: Navri Navri Bintang <navri_bintang at yahoo.com>
  • Date: Thu, 15 May 2008 06:50:49 -0400 (EDT)
  • Reply-to: navri_bintang at yahoo.com

Hi,

I have a problem with nonlinear regression in Mathematica. I want to fit my data (below) to this following equation:

y = Exp[(1-Exp[a*(1-Exp[-b*x])])*(Exp[-b*x])/(1-Exp[-b*x])]

and I would like to find a and b values and also determined r-squared value.

I try to use NonlinearRegression/NonlinearFit code, but its not working, I hope someone could help me

Thanks a lot

DATA:
x	y
1	0.00
2	0.00
3	0.00
4	0.00
5	0.00
6	0.00
7	0.00
8	0.00
9	0.00
10	0.00
11	0.00
12	0.00
13	0.00
14	0.00
15	0.00
16	0.00
17	0.00
18	0.00
19	0.00
20	0.00
21	0.00
22	0.00
23	0.00
24	0.00
25	0.00
26	0.00
27	0.00
28	0.00
29	0.00
30	0.00
31	0.00
32	0.00
33	0.00
34	0.00
35	0.00
36	0.00
37	0.00
38	0.00
39	0.00
40	0.00
42	0.00
44	0.00
46	0.00
48	0.00
50	0.00
52	0.04
54	0.06
56	0.08
58	0.09
60	0.16
65	0.24
70	0.32
75	0.43
80	0.49
85	0.58
90	0.80
95	0.91
100	1.00
105	1


Rgds,
Navri


      



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