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Gompertz curve
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03-30-2015, 06:36 PM
(This post was last modified: 03-30-2015 06:40 PM by salvomic.)
Post: #2
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RE: Gompertz curve
However, about this curve I need help for the "inverse" problem: to use regression (interpolation) for that formula (Y=A*e^(-B*e^(-C*X))) with Statistic 2var (or otherwise).
I have a series of values for X (t, years) and Y (population): X: 1,2,3,4,5,6,7,8,9 Y: 146583, 150203, 161475, 169182, 177619, 183054, 189431, 193082, 195687 I would get an estimation for A, B, C. (Then predict future values...) I set in Symb -> Type: "User Defined" and Fit: "A*e^(-B*e^(-C*X))", but I'm not able to get plot and the values of estimated A, B, C, as I would like to have... Any hints? ∫aL√0mic (IT9CLU) :: HP Prime 50g 41CX 71b 42s 39s 35s 12C 15C - DM42, DM41X - WP34s Prime Soft. Lib |
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| Messages In This Thread |
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Gompertz curve - salvomic - 03-30-2015, 03:09 PM
RE: Gompertz curve - salvomic - 03-30-2015 06:36 PM
RE: Gompertz curve - Marcio - 03-30-2015, 07:44 PM
RE: Gompertz curve - salvomic - 03-30-2015, 07:51 PM
RE: Gompertz curve - salvomic - 03-30-2015, 10:07 PM
RE: Gompertz curve - Marcio - 03-31-2015, 01:54 PM
RE: Gompertz curve - salvomic - 03-31-2015, 02:04 PM
RE: Gompertz curve - Han - 03-30-2015, 07:50 PM
RE: Gompertz curve - salvomic - 03-30-2015, 08:08 PM
RE: Gompertz curve - Marcio - 04-01-2015, 03:43 AM
RE: Gompertz curve - salvomic - 04-01-2015, 07:22 AM
RE: Gompertz curve - Marcio - 04-01-2015, 09:55 AM
RE: Gompertz curve - salvomic - 04-01-2015, 11:41 AM
RE: Gompertz curve - Marcio - 04-01-2015, 11:57 AM
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