Research Article
Modified Robust Ridge M-Estimators in Two-Parameter Ridge Regression Model
Table 22
Estimated MSE and the regression coefficients for water quality data.
| Estimators | MSE | | | | |
| OLS | 0.090834 | 0.2944 | 0.1645 | 0.1111 | 0.4784 | HK | 0.069848 | 0.5468 | 0.0353 | 0.1525 | 0.1338 | M | 0.033552 | 0.4883 | 0.0966 | 0.0875 | 0.3723 | MRE | 0.025785 | 0.4878 | 0.0962 | 0.0763 | 0.3136 | M1 | 0.154191 | 0.488 | 0.0953 | 0.0308 | 0.1098 | TRME1 | 0.217282 | 0.4871 | 0.0926 | 0.0183 | 0.0635 | TRME2 | 0.030236 | 0.5386 | 0.1017 | 0.0337 | 0.1221 | MTPM1 | 0.054269 | 0.553 | 0.0086 | 0.0014 | 0.001 | MTPM2 | 0.051323 | 0.5609 | 0.0215 | 0.0063 | 0.0045 | MTPM3 | 0.022628 | 0.5863 | 0.0374 | 0.1197 | 0.099 | MTPM4 | 0.043141 | 0.5233 | 0.0893 | 0.0129 | 0.0448 | MTPM5 | 0.054105 | 0.5536 | 0.0096 | 0.0016 | 0.0012 | MTPM6 | 0.052874 | 0.5568 | 0.0152 | 0.0032 | 0.0023 |
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