Table 5 Analysis of variance of variance.
From: Research and experiment on the trenching performance of orchard trenching device
Indexes | Ditch depth | Ditch width | Depth of floating soil at the bottom of the ditch | Operation power consumption | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Source of variation | F value | p value | Significance | F value | p value | Significance | F value | p value | Significance | F value | p value | Significance |
Model | 9.38 | 0.0037 | ** | 4.67 | 0.0272 | * | 4.67 | 0.0272 | * | 11.03 | 0.0023 | ** |
X1 | 2.00 | 0.2004 | – | 4.419E-004 | 0.9838 | – | 4.419E-004 | 0.9838 | – | 35.71 | 0.0006 | ** |
X2 | 0.008786 | 0.9279 | – | 1.24 | 0.3020 | – | 1.24 | 0.3020 | – | 0.14 | 0.7220 | – |
X3 | 2.19 | 0.1823 | – | 6.13 | 0.0425 | * | 6.13 | 0.0425 | * | 9.62 | 0.0173 | * |
X1X2 | 1.92 | 0.2086 | – | 14.54 | 0.0066 | – | 14.54 | 0.0066 | – | 0.031 | 0.8643 | – |
X1X3 | 3.11 | 0.1212 | – | 0.024 | 0.8816 | – | 0.024 | 0.8816 | – | 1.52 | 0.2568 | – |
X2X3 | 0.012 | 0.9153 | – | 1.93 | 0.2070 | – | 1.93 | 0.2070 | – | 6.87 | 0.0344 | * |
X12 | 14.36 | 0.0068 | ** | 24.43 | 0.0017 | ** | 24.43 | 0.0017 | ** | 0.40 | 0.5455 | – |
X22 | 11.71 | 0.0111 | * | 20.59 | 0.0027 | ** | 20.59 | 0.0027 | ** | 6.47 | 0.0385 | * |
X32 | 3.44 | 0.1059 | – | 10.23 | 0.0151 | * | 10.23 | 0.0151 | * | 6.75 | 0.0355 | * |
Residual error | – | – | – | – | ||||||||
Missing items | 0.70 | 0.5989 | – | 3.50 | 0.1290 | – | 3.50 | 0.1290 | – | 0.57 | 0.6648 | – |
