| (a) | |||
| Model | AICc | Δi | |
| A | y = µ + αx1 + βx2 + φx1x2 | -- | |
| B | y = µ + αx1 + βx2 | 496.6 | 5.9 |
| C | y = µ + αx1 | 493.3 | 2.6 |
| D | y = µ + βx2 | 490.7 | 0 |
| (b) | |||
| Model | |||
| A | y = µ + αx1 + βx2 + φx1x2 | 356.6 | 38.4 |
| B | y = µ + αx1 + βx2 | 326.5 | 8.3 |
| C | y = µ + αx1 | 318.2 | 0 |
| D | y = µ + βx2 | 319.0 | 0.8 |
| (c) | |||
| Model | |||
| A | y = µ + αx1 + βx2 + φx1x2 | 68.0 | 34.7 |
| B | y = µ + αx1 + βx2 | 40.3 | 7.0 |
| C | y = µ + αx1 | 33.3 | 0.0 |
| D | y = µ + βx2 | 34.8 | 1.5 |
| (d) | |||
| Model | AICc | Δi | |
| A | y = µ + αx1 + βx2 + φx1x2 | 338.4 | 30.4 |
| B | y = µ + αx1 + βx2 | 315.3 | 7.3 |
| C | y = µ + αx1 | 308.0 | 0.0 |
| D | y = µ + βx2 | 310.0 | 2.0 |
| (e) | |||
| Model | |||
| A | y = µ + αx1 + βx2 + φx1x2 | 59.8 | 26.3 |
| B | y = µ + αx1 + βx2 | 39.6 | 6.1 |
| C | y = µ + αx1 | 33.5 | 0 |
| D | y = µ + βx2 | 51.2 | 17.7 |