Study on the Effect of Apple Size Difference on Soluble Solids Content Model Based on Near-Infrared (NIR) Spectroscopy

Table 1

The statistical results of SSC of apple.

		Data set	Min/Brix	Max/Brix	Mean/Brix	Standard deviation
65 mm–75 mm	All	160	9.8	17.2	13.8	1.62
	Calibration set	120	9.8	17.2	13.8	1.24
	Prediction set	40	10.9	16.7	13.8	1.60
75 mm–85 mm	All	160	8.3	17.2	13.4	1.78
	Calibration set	120	8.3	17.2	13.2	1.73
	Prediction set	40	8.7	16.5	12.73	1.92
85 mm–95 mm	All	160	10.9	15.3	13.3	0.93
	Calibration set	120	10.9	15.3	13.3	0.88
	Prediction set	40	11.3	15.3	13.3	1.06