Research Article
Applications of Robust Methods in Spatial Analysis
Table 2
M-estimates of the model parameters, standard errors in parentheses, and RMSE for the coal-ash study.
| | | | | RMSE |
| | 10 | 10.1990 (0.8765) | −0.1823 (0.0838) | 0.0773 (0.0511) | 1.2067 | | 20 | 11.0270 (0.6505) | −0.1776 (0.0660) | 0.0277 (0.0406) | 1.1302 | | 30 | 10.6620 (0.5085) | −0.1593 (0.0520) | 0.0272 (0.0316) | 1.1368 | | 50 | 10.6110 (0.3479) | −0.1428 (0.0359) | 0.0105 (0.0219) | 1.1431 | | 208 | 11.0390 (0.1986) | −0.1781 (0.0222) | −0.0011 (0.0124) | 1.1220 |
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