Variable | Level | Median | Mean | Standard deviation | Min | Max | Skewness |
---|---|---|---|---|---|---|---|
Weight of load (kg) | Light | 5.0 | 5.1 | 1.43 | 2.6 | 12.5 | 1.53 |
Moderate | 12.5 | 12.6 | 2.54 | 5.5 | 20.0 | −0.03 | |
Heavy | 21.0 | 20.8 | 3.06 | 12.0 | 35.0 | 0.35 | |
Horizontal distance (cm) | Close | 30.0 | 30.4 | 3.0 | 25.5 | 47.5 | 1.12 |
Moderate | 44.0 | 44.0 | 6.4 | 30.0 | 62.5 | −0.17 | |
Far | 60.0 | 59.0 | 8.3 | 36.5 | 72.5 | −0.51 | |
Twisting angle (degrees) | Small | 19.5 | 18.9 | 4.6 | 5.0 | 40.5 | 1.49 |
Moderate | 41.5 | 41.7 | 10.3 | 13.5 | 67.0 | 0.22 | |
Large | 70.0 | 67.0 | 14.6 | 17.5 | 132.5 | −0.47 | |
Vertical travel distance (cm) | Short | 40.0 | 41.5 | 9.5 | 25.0 | 98.5 | 1.98 |
Moderate | 79.0 | 81.5 | 19.1 | 45.3 | 156.3 | 0.48 | |
Long | 133.1 | 126.4 | 25.9 | 50.0 | 190.0 | −0.09 |