Table 9 ANOVA and responsibility (percent) for each control factor
Control factors Degrees of freedom Sum of squares Mean square Variance ratio F Response (%)
A. Bending angle concept 3.00 68.24 22.75 0.35 23.62
B. Roller radius (R) (m) 3.00 71.57 23.86 0.36 24.77
C. Line velocity (U) (m/s) 3.00 39.82 13.27 0.20 13.79
D. Roll inter-distance (m) 3.00 19.83 6.61 6.86
E. Roll gap (% of nominal thickness) 3.00 89.44 29.81 0.45 30.96
Error 0.00 0.00 –
Total 15.00 288.90
Error 9.00 197.50 65.83