Potentiodynamic Polarization Behaviour of Electroless Ni-P-W Coatings

Table 7

Mean response table for grey relational grade.

Level	A	B	C	D
1	0.7266	0.6676	0.6082	0.6604
2	0.6963	0.7335	0.7468	0.6761
3	0.7208	0.7427	0.7887	0.8073
Delta	0.0303	0.0751	0.1806	0.1468
Rank	4	3	1	2
Total mean grey relational grade = 0.714583