Process parameter | Level | Temp (A) | Time (B) | Sawdust/polyethylene content (C) | Pressure (D) |
Average value tensile strength (MPa) | L1 | 9.091 | 11.69 | 9.455 | 10.276 |
| L2 | 11.062 | 11.004 | 11.265 | 12.438 |
| L3 | 12.256 | 9.715 | 11.688 | 9.694 |
Main effects (tensile strength) (MPa) | L2 - L1 | 3.165 | −0.685 | 1.810 | 2.162 |
| L3 - L2 | −1.194 | 0.423 | 0.423 | 2.744 |
Differences | [(L3 - L2)-(L2 - L1)] | −4.360 | −1.386 | −1.386 | −4.906 |