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