| 子模型中的变量(X) | R2 | 增值贡献ΔR2 | ||
| X1 | X2 | X3 | ||
| 空集或K = 0时,平均贡献 | 0 | 0.221 | 0.006 | 0.037 |
| X1 | 0.221 | — | 0.021 | 0.002 |
| X2 | 0.006 | 0.236 | — | 0.053 |
| X3 | 0.037 | 0.186 | 0.022 | — |
| K = 1时,平均贡献 | — | 0.211 | 0.022 | 0.028 |
| X1X2 | 0.242 | — | — | 0.008 |
| X1X3 | 0.223 | — | 0.027 | — |
| X2X3 | 0.059 | 0.191 | — | — |
| K = 2时,平均贡献 | — | 0.191 | 0.027 | 0.008 |
| X1X2X3 | 0.250 | — | — | — |
| 总平均贡献 |
| 0.208 | 0.018 | 0.024 |