Hierarchizing the Product Characteristics of Industrial Plain Sewing Machine for Making Best Purchase Decision

Table 8

Consistency calculation.

	nth root value	Eigenvector	Row matrix	Lambda value (λ)	Consistency Index (CI)	Consistency Ratio (CR)
Table lamp	0.27	0.02	0.21	11.19	0.0989	0.066
Durability	0.66	0.05	0.51	11.12
Less cost	0.39	0.03	0.33	12.04
Less noise	0.61	0.04	0.43	10.29
Maximum speed	1.48	0.10	1.16	11.42
Warranty period	0.29	0.02	0.20	10.16
Automatic and constant lubrication system	1.97	0.14	1.41	10.40
Flexibility of pressure foot lever	2.83	0.20	2.04	10.46
Thread tension regulator	2.58	0.18	1.97	11.11
Separate servo motor	3.44	0.24	2.54	10.73
Column sum	14.52	Lambda average (λmax) =		10.89