Name | Equation | Estimated Parameters | R 2 | Adj R 2 | Standard Error of Estimate | ||||
---|---|---|---|---|---|---|---|---|---|
 |  | F max | b | c | F b | d |  |  |  |
Sigmoid | f = F b +F max /(1+exp(-(x-c)/b)) | 45.11 | 1.49 | 22.37 | -0.03 | Â | 1 | 1 | 0.1354 |
Richards | f = F b +(F max /(1+exp(-(1/b)*(x-c)))^d) | 45.11 | 1.58 | 21.95 | 0.02 | 1.20 | 1 | 1 | 0.0926 |
Gompertz | f = F b +F max *exp(-exp(-(x-c)/b)) | 45.19 | 2.15 | 21.45 | Â | 0.29 | 0.9992 | 0.9992 | 0.6006 |
Hill | f = F b +F max *x^b/(d^b+x^b) | 45.18 | 14.95 | Â | 0.08 | 22.34 | 1 | 1 | 0.1351 |
Chapman | f = F b +F max *(1-exp(-b*x))^d | 45.19 | 0.46 | Â | 0.29 | 20615 | 0.9992 | 0.9992 | 0.6006 |