Dataset: lifting_task.dat Source: S. Singh and S. Kumar (2012). "Factorial Analysis of Lifting Task to Determine the Effect of Different Parameters and Interactions," Journal of Manufacturing Technology Managenet, Vol. 23, #7, pp. 947-953. Description: Experiment conducted to determine relationships among factors (object weight =10,15,20; twisting angle = 0,30,45; lifiting frequency=2,3,4) on lifting index (at origin and destination). High lifting index is associated with higher back pain. Variables/Columns object weight in kg 7-8 twising angle in degrees 15-16 lifting frequency per minute 24 Lifting Index at Origin 28-32 Lifting Index at destination 36-40