Official Journal of the Japan Wood Research Society
Table 5 Analysis of variance results of surface roughness values
Factors | Degrees of freedom | Sum of squares | Mean square | F value | Level of significance (P ≤ 0.05) |
|---|---|---|---|---|---|
Densification (A) | 4 | 2.448 | 0.612 | 12.2296 | 0.0000* |
Heat treatment (B) | 2 | 21.359 | 10.680 | 213.4007 | 0.0000* |
Interaction (AB) | 8 | 0.514 | 0.064 | 1.2838 | Ns |
Varnish type (C) | 2 | 391.861 | 195.930 | 3915.0548 | 0.0000* |
Interaction (AC) | 8 | 4.072 | 0.509 | 10.1703 | 0.0000* |
Interaction (BC) | 4 | 1.097 | 0.274 | 5.4786 | 0.0003* |
Interaction (ABC) | 16 | 0.728 | 0.046 | 0.9093 | Ns |
Error | 315 | 15.764 | 0.050 | ||
Total | 359 | 437.843 |