An Improved Metabolism Grey Model for Predicting Small Samples with a Singular Datum and Its Application to Sulfur Dioxide Emissions in China

Table 2

Fitting and prediction results of the MGM.

Original data sequence	Fitted and predictive value	Residual errors	Relative errors
4	4	2.6539	0
6	3.3460	3.5454	44.2330
9	5.4545	3.8919	39.3935
5	8.8919	5.7546	77.8382
20.25	14.4953	6.7450	28.4180
30.375	23.6299	7.0416	22.2059
45.5625	36.2875	9.2749	20.3565
68.34375	57.3535	10.9902	16.0808