| 观测 时序 | 实际值 | 无偏GM(1,1)模型 | GM(1,1)模型 | 本文模型 | 备注 | |||
| 预测值 | 误差值 | 预测值 | 误差值 | 预测值 | 误差值 | |||
| 1 | 1.2 | 0 | 0 | 0 | 0 | 0 | 0 | 模拟值 |
| 2 | 2.2 | 2.89 | −0.69 | 2.61 | −0.41 | 2.18 | 0.02 | |
| 3 | 3.1 | 3.56 | −0.46 | 3.21 | −0.11 | 3.15 | −0.05 | |
| 4 | 4.3 | 4.38 | −0.08 | 3.96 | 0.34 | 4.12 | 0.18 | |
| 5 | 5.1 | 5.40 | −0.30 | 4.87 | 0.23 | 5.09 | −0.01 | |
| 6 | 6.0 | 6.65 | −0.65 | 5.99 | 0.01 | 6.06 | −0.06 | |
| 7 | 7.2 | 8.18 | −0.98 | 7.38 | 0.18 | 7.03 | 0.17 | |