Table III.

The Regression Analysis Results of the Experiment

Response	Model	S	r2	Adjusted r2	Predicted r2	Remark
Y1	Linear	1.67	0.5741	0.4943	0.2519	suggest
	Quadratic	1.56	0.6953	0.5547	− 0.1852	–
	Special	1.24	0.8526	0.7200	− 0.1751	suggest
	Cubic	0.58	0.9870	0.9381	–	–
Y2	Linear	91.28	0.4058	0.2944	0.1175	–
	Quadratic	98.89	0.4333	0.1717	− 0.4305	–
	Special	65.86	0.8066	0.6326	0.2692	Suggest
	Cubic	23.07	0.9905	0.9549	–	–

Fitting model regression

Equation: Y₁ = 24.40 + 0.75A + 1.18B + 1.45C − 1.14AB − 0.52 AC − 0.89 BC − 0.19A² − 1.09B² − 1.68C²

Y₂ = 238.38 + 17.41A − 8.63B − 85.22C − 16.65AB + 31.95 AC − 18.51 BC − 58.42A² − 85.79B² + 107.10C²