Optimization and Prediction of Tribological Behaviour of Al-Fe-Si Alloy-Based Nanograin-Refined Composites Using Taguchi with Response Surface Methodology

Table 5

S/N ratios table for SWR.

Level	A	B	C	D
1	-10.413	-11.565	-7.999	-7.798
2	-8.454	-7.292	-8.323	-8.016
3	-5.868	-5.877	-8.412	-8.920
Delta	4.545	5.688	0.412	1.122
Rank	2	1	4	3

Optimum level.