e-Modeling and Evolution of Nanolubricant Coupled Machining Parameters Using Statistical Tool

Table 5

Response table for means (surface roughness).

Level	Speed (rpm)	Feed rate (mm/min)	Drill diameter (mm)
1	8.300	5.484	6.510
2	7.494	7.170	6.934
3	6.552	9.692	8.902
Delta	1.748	4.208	2.392
Rank	3	1	2