Investigation on Surface Roughness of Inconel 718 in Photochemical Machining

Table 3

Summary of ANOVA for surface roughness.

Source	Degree; of freedom	Adj. sum of square	Adj. mean of square	-value	value
Temperature	2	0.310680	0.155340	167.80	0.000
Concentration	2	0.043659	0.021830	23.58	0.000
Time	2	0.006500	0.003250	3.51	0.049
Error	20	0.018515	0.000926
Total	26	0.379354