Combined Use of Mathematical Optimization and Design of Experiments for the Maximization of Profit in a Four-Echelon Supply Chain

Table 2

Analysis of variance for profit of each scenario.

Source	Sum of squares	df	Mean square	test	value
A: capacity		1		0.63	0.4313
B: quality		1		2047.87	0.0000
C: delivery time		1		381.61	0.0000
D: financing		1		0.26	0.6123
AB + CD		1		1.78	0.1880
AC + BD		1		0.18	0.6719
AD + BC		1		2.31	0.1353
Total error		47
Total (corr.)		54

-squared = 98.1061 percent; -squared (adjusted by d.f.) = 97.824 percent; standard error of est. = 43634.6; average absolute error = 31174.2; Durbin-Watson st. = 1.68847 (); residual autocorrelation of Lag 1 = 0.149145.