n=20   0% 10% 20% 30% 40%
    θ1 θ2 θ1 θ2 θ1 θ2 θ1 θ2 θ1 θ2
Least-Squares Bias 0.0375 0.1083 25343 47179 8583 6953 2407 5185 1604 4015
MSE 0.0479 0.4842 5.5E+9 1.5E+10 4.6E+9 2.1E+9 3.2E+8 2.2E+9 1.0E+8 1.4E+9
MEP 5.0375 1.1083 25348 45180 9324 7329 3456 7733 1934 5234
Robust Method Bias 0.0901 0.1525 0.0056 0.2242 0.034 0.2421 0.0199 0.2265 0.0176 0.3269
MSE 0.0534 0.5646 0.2111 0.9423 0.2502 1.2292 0.2578 0.8812 0.2767 1.6324
MEP 5.0701 1.1327 5.0056 1.2201 5.0134 1.2440 5.0199 1.2263 4.9824 1.3269
n=50   0% 10% 20% 30% 40%
    θ1 θ2 θ1 θ2 θ1 θ2 θ1 θ2 θ1 θ2
Least-Squares Bias 0.0131 0.1430 5214 4108 7326 5423 2113 4927 1476 3104
MSE 0.0396 0.2566 6.1E+9 1.7E+9 3.2E+9 1.8E+9 2.5E+8 1.8E+9 7.9E+7 1.2E+9
MEP 5.0131 1.0414 30123 58972 8589 6954 2412 6186 1609 4016
Robust Method Bias 0.0701 0.1625 0.0328 0.0914 0.02925 0.1285 0.0494 0.1843 0.0050 0.2876
MSE 0.2167 0.5221 0.2333 0.6257 0.2718 0.7224 0.3150 0.8543 0.2937 0.9745
MEP 5.0701 1.1131 5.0328 1.0914 5.0292 1.1285 5.0494 1.1843 4.9734 1.1567
Table 3: Bias, Mean Square Errors (MSE) and Mean Estimated Parameter (MEP) with Percentage Contamination in the X Direction.