Model |
Sum of squares | df | Mean square | F | |
---|---|---|---|---|---|
Regression | 612.182 | 4 | 153.045 | 100.072 | 0.000 |
Residual | 601.037 | 393 | 1.529 | ||
Total | 1213.219 | 397 |
Model |
R | Adjusted |
Std error of the estimate | |
---|---|---|---|---|
1 | 0.710 |
0.505 | 0.500 | 1.237 |
PPMC | Cost per timber | Demand for timber | Stored timber species | Spoiled timber species |
---|---|---|---|---|
Timber sales | 0.381 | 0.634 | 0.592 | 0.265 |
Timber species | 1–100 pieces | 101–200 pieces | 201–300 pieces | 301–400 pieces | 401–500 pieces | Above 500 pieces | Total | % demands from consumers |
---|---|---|---|---|---|---|---|---|
35 | 52 | 43 | 7 | 13 | 29 | 179 | 44.8 | |
12 | 24 | 15 | 10 | 0 | 9 | 70 | 17.5 | |
3 | 5 | 3 | 0 | 0 | 1 | 12 | 3.0 | |
5 | 7 | 4 | 1 | 2 | 5 | 24 | 6.0 | |
0 | 1 | 0 | 0 | 1 | 2 | 4 | 1.0 | |
2 | 0 | 0 | 0 | 0 | 4 | 6 | 1.5 | |
0 | 1 | 0 | 0 | 0 | 1 | 2 | 0.5 | |
0 | 1 | 0 | 0 | 0 | 0 | 1 | 0.3 | |
Others | 5 | 14 | 37 | 11 | 3 | 32 | 102 | 25.5 |
Total | 62 | 105 | 102 | 29 | 19 | 83 | 400 | 100.0 |
Model |
B | Std error | Beta | t | Lower bound | Upper bound | |
---|---|---|---|---|---|---|---|
(constant) | 0.346 | 0.193 | 1.788 | 0.074 |
0.034 | 0.725 | |
Cost per timber | 0.160 | 0.055 | 0.114 | 2.898 | 0.004 |
0.051 | 0.268 |
Demand for timber | 0.413 | 0.044 | 0.407 | 9.322 | 0.000 |
0.326 | 0.500 |
Stored timber | 0.287 | 0.042 | 0.307 | 6.895 | 0.000 |
0.205 | 0.369 |
Spoiledtimber | 0.087 | 0.040 | 0.081 | 2.177 | 0.030 |
0.008 | 0.165 |