Study on Preparation and Characterization of Graphene Based on Ball Milling Method

Table 8

Standard sum of squared errors and coefficient of determination.

Multiple regression method	Sum of squared errors	Coefficient of determination	PRESS statistic
	Partial least squares quadratic polynomial	0.3066	0.9617	4.6151
Partial least squares quadratic (considering interaction terms)	1.7404	0.7824	5.7093
Partial least squares quadratic (considering quadratic terms)	0.1802	0.9775	2.7284