
New Manufacturing Management Employing New JIT ◾ 419
Table 10.15 Discriminant Coefcients for Cutting Tool Materials during Rough Cutting
Discriminant Coefcient
Group 1 vs. 2 Group 1 vs. 3 Group 1 vs. 4 Group 2 vs. 3 Group2 vs. 4 Group 3 vs. 4
Mahalanobis distance 75.419 40.154 8.69 9.435 38.974 17.092
Determine the error
rate(%)
0.001 0.077 7.025 6.229 0.09 1.936
1 Constant term 86.422 52.761 17.174 −33.661 −69.248 −35.587
2 Tensile strength 4.32
2.94
1.24
1.37 3.08
1.71
3 Elongation 3.97 3.59 0.84
0.37 3.13 2.75
4 Hardness 0.173 0.121 0.048
−0.052 −0.125
−0.073
5 Thermal conductivity −0.158
−0.097
−0.048
0.061 0.11
0.049
6 Density −4.558
−3.592
−1.035
0.966 3.524 ...