Table 6. Coefficients of determination and multiple correlation of animal products according to the grading system

	Grade 1+	Grade 1	Grade 2
Coefficient of determination	0.941	0.982	0.993
Adjusted coefficient of determination	0.941	0.982	0.991
Coefficient of multiple correlation	0.991	0.993	0.996

Population numbers for Grades 1⁺, 1, and 2 are 145,872, 157,833, and 115,616, respectively.