4. Comparison of Actual and Predicted Values with Absolute Errors for Each Test Sample.

	actual values				predicted values				absolute error
sample	L*	a*	b*	K/S	L*	a*	b*	K/S	L*	a*	b*	K/S
1	24.76	–1.78	–2.17	12.48	25.72	–1.97	–2.90	11.68	0.96	0.19	0.73	0.80
2	27.53	–1.89	–3.21	10.37	28.00	–1.99	–3.20	9.78	0.47	0.10	0.01	0.59
3	28.64	–1.85	–3.37	9.29	28.28	–1.97	–3.19	9.80	0.36	0.12	0.18	0.51
4	31.69	–3.02	–3.00	7.76	32.59	–3.04	–2.91	7.27	0.90	0.02	0.09	0.49
5	26.33	–2.66	–3.55	11.57	26.22	–2.45	–3.18	11.52	0.11	0.21	0.37	0.05
6	26.63	–1.81	–2.12	10.81	27.12	–1.78	–2.26	10.27	0.49	0.03	0.14	0.54
7	25.56	–2.05	–2.63	11.91	25.23	–1.97	–2.54	12.04	0.33	0.08	0.09	0.13
8	33.73	–2.34	–2.60	6.38	33.52	–2.40	–2.34	6.33	0.21	0.06	0.26	0.05
9	28.76	–1.42	–1.99	8.79	29.79	–1.47	–1.53	8.42	1.03	0.05	0.46	0.37
10	30.74	–3.47	–1.53	8.32	30.63	–3.37	–1.30	8.48	0.11	0.10	0.23	0.16
11	32.19	–3.28	–2.89	7.58	32.67	–3.02	–2.77	7.30	0.48	0.26	0.12	0.28