Table 4 Analysis of variance table for the model predicting zeta-potential of the chemically modified fibers
Source | Sum of squares | df | Mean square | F value | p-value Prob > F |
|---|---|---|---|---|---|
Model | 934.08 | 7 | 133.44 | 4.51 | 0.0326 |
A-Epichlorohydrin | 3.94 | 1 | 3.94 | 0.1332 | 0.7259 |
B-Triethylamine | 240.24 | 1 | 240.24 | 8.11 | 0.0248 |
C-Cellulose suspension | 5.02 | 1 | 5.02 | 0.1695 | 0.6929 |
BC | 176.62 | 1 | 176.62 | 5.96 | 0.0446 |
A2 | 184.93 | 1 | 184.93 | 6.24 | 0.0411 |
B2 | 86.63 | 1 | 86.63 | 2.93 | 0.131 |
C2 | 204.27 | 1 | 204.27 | 6.9 | 0.0341 |
Residual | 207.31 | 7 | 29.62 | ||
Lack of fit | 190.55 | 5 | 38.11 | 4.55 | 0.19 |
Pure error | 16.75 | 2 | 8.38 | ||
Cor total | 1141.39 | 14 |