Table 4.
Model statistics and parameter evaluation.
| Equation | Model Summary | Parameter | |||||||
|---|---|---|---|---|---|---|---|---|---|
| R2 | F | df1 | df2 | Sig. | Constant | b1 | b2 | b3 | |
| Linear | 0.9668 | 145.67 | 1 | 5 | 0.00 | 13,449.59 | 129,056.15 | ||
| Logarithmic | 0.8265 | 23.82 | 1 | 5 | 0.00 | 67,630.82 | 16,695.71 | ||
| Reciprocal | 0.6172 | 8.06 | 1 | 5 | 0.04 | 48,300.51 | −1512.71 | ||
| Quadratic | 0.9981 | 1055.11 | 2 | 4 | 0.00 | 20,956.71 | 16,428.10 | 326,334.50 | |
| Cubic | 0.9982 | 548.35 | 3 | 3 | 0.00 | 21,678.82 | −1861.93 | 448,942.86 | 237,473.50 |
| Power | 0.9011 | 45.55 | 1 | 5 | 0.00 | 86,017.36 | 0.48 | ||
| S | 0.7147 | 12.53 | 1 | 5 | 0.02 | 10.81 | −0.05 | ||
| Exponential | 0.9939 | 818.47 | 1 | 5 | 0.00 | 18,262.32 | 3.63 | ||