Analysis and Optimization of a Cyclone Integrated with a Cartridge Filter in a Hazardous Materials Collection Truck

Table 7

Coefficients in terms of coded factors.

Factor	Coefficient Estimate	Standard Error	95% CI Low	95% CI High	VIF
Intercept	58.55	1.01	56.43	60.66
A-X1	−11.98	0.7902	−13.64	−10.32	1.0000
B-X2	5.21	0.7902	3.55	6.87	1.0000
C-X3	5.21	0.7902	3.55	6.87	1.0000
D-X4	9.27	0.7902	7.61	10.93	1.0000
AB	6.88	1.37	4.00	9.75	1.0000
BC	4.38	1.37	1.50	7.25	1.0000
BD	−2.50	1.37	−5.38	0.3755	1.0000
A^2	−1.66	1.06	−3.88	0.5577	1.05
B^2	−2.13	1.06	−4.35	0.0889	1.05
C^2	−1.97	1.06	−4.19	0.2452	1.05