Variable1 | Coefficient | Standard error | t-statistic | p-value |
---|
Intercept | 79.1 | 2.8 | 28.0 | <0.00001 |
Stem size | 19.3 | 1.2 | 15.8 | <0.00001 |
Group C operators | −57.3 | 2.9 | −19.5 | <0.00001 |
Group D operators | −41.4 | 2.4 | −17.0 | <0.00001 |
Total degrees of freedom
| Â |
F statistic
| Â |
Adjusted R Square
|
2491 | Â | 186.3 | Â | 0.182 |
- 1Stem size is the average stem size (m3) processed during each hour. Group C and Group D operators were indicator variables for single operators whose productivity was different from members within other groups, but not with members in the same group. Note that the default operator value was when two or more machines processed stems within the same hour.