Optimization of Multiple Roughness Characteristics of Chemically Deposited Ni-P-W Coating Using Weighted Principal Component Analysis

Table 9

ANOVA on MPI.

Source	DF	Sum of square	Mean of square	F-ratio	Contribution %
A	2	0.09764	0.04882	2.55*	9.18
B	2	0.03214	0.01607	0.84	3.02
C	2	0.11796	0.05898	3.08*	11.09
A * B	4	0.21563	0.05391	2.81	20.28
A * C	4	0.10983	0.02746	1.43	10.33
B * C	4	0.33686	0.08421	4.39**	31.68
Error	8	0.15339	0.01917	14.42
Total	26	1.06344	100.00

*Significant at 75% confidence level.
**Significant at 95% confidence level.