Integrating the TRIZ and Taguchi's Method in the Optimization of Processes Parameters for SMT

Table 4

Results of the analysis of variance for S/N ratios.

Source	DF	SS	MS	𝐹	Pure SS	Contribution (%)
𝐴	2	20.949	10.475	7.33	18.891	34.14%
𝐵	2	19.303	9.651	6.75	17.245	31.17%
𝐷	2	13.016	6.508	4.55	10.958	19.81%
𝐶 + error	2	2.058	1.429		—	—
Pooled error	(2)	(2.058)	(1.429)		8.232	14.88%
Total	8	55.326			55.326	100%