| Equation | R2 | Constant | b1 | b2 | b3 |
| Linear | 0.930 | 0.240 | 6.109 | ||
| Quadratic | 0.998 | 1.126 | 0.205 | 5.904 | |
| Cubic | 1.000 | 0.987 | 2.413 | 0.115 | 3.860 |
| The Independent variable is X | |||||