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(a)
| Source | df | SS | Adj MS | F | P | R 2 |
|---|---|---|---|---|---|---|
| Regression | 9 | 0.261363 | 0.029040 | 21.18 | 0.000 | 95.02 |
| Linear | 3 | 0.154385 | 0.051462 | 37.54 | 0.000 | |
| Square | 3 | 0.086877 | 0.028959 | 21.13 | 0.000 | |
| Interaction | 3 | 0.020102 | 0.006701 | 4.89 | 0.024 | |
| Residual error | 10 | 0.013708 | 0.001371 | |||
| Pure error | 5 | 0.000404 | 0.000081 | |||
| Total | 19 | 0.275071 |
