Table 6 Variance analysis of working resistance.
Source | Square sum | Degrees of freedom | Mean square | F | P |
|---|---|---|---|---|---|
Model | 40,667.13 | 9 | 4518.57 | 12.47 | 0.0016 |
A | 2099.52 | 1 | 2099.52 | 5.79 | 0.0470 |
B | 2835.05 | 1 | 2835.05 | 7.83 | 0.0266 |
C | 5671.13 | 1 | 5671.13 | 15.65 | 0.0055 |
AB | 234.09 | 1 | 234.09 | 0.6461 | 0.4479 |
AC | 4070.44 | 1 | 4070.44 | 11.23 | 0.0122 |
BC | 479.61 | 1 | 479.61 | 1.32 | 0.2877 |
A2 | 23,684.21 | 1 | 23,684.21 | 65.37 |  < 0.0001 |
B2 | 136.80 | 1 | 136.80 | 0.3776 | 0.5583 |
C2 | 642.20 | 1 | 642.20 | 1.77 | 0.2248 |
Residual | 2536.11 | 7 | 362.30 | Â | Â |
Lack of fit | 1998.93 | 3 | 666.31 | 4.96 | 0.0779 |
Error | 537.18 | 4 | 134.29 | Â | Â |
Sum | 43,203.24 | 16 | Â | Â | Â |
