weighted and two stage least squares estimation of ... - Boston College

100 obs.
TABLE 4
Simulation Results for Truncated Regression Estimators
Design 4: Endogenous Truncated Normal Errors
Slope Intercept
Mean Bias Med. Bias RMSE MAD Mean Bias Med. Bias RMSE MAD
2SLS 0.2107 0.1556 1.8967 1.4026 -0.0673 -0.0602 0.1724 0.1330
A2SLS -0.1226 -0.1527 1.6439 1.2530 0.0036 0.0054 0.1579 0.1207
STLS 0.3044 0.3256 0.4845 0.4043 0.0335 0.0374 0.1309 0.1029
PWD 0.2551 0.2482 0.4509 0.3665 - - - -
MLE 0.1136 0.1362 0.3082 0.2472 0.2630 0.2659 0.2727 0.2630
200 obs.
2SLS 0.1439 0.1605 1.1743 0.9431 -0.0440 -0.0360 0.1157 0.0873
A2SLS -0.0069 -0.0161 1.0063 0.7719 -0.0048 -0.0055 0.1055 0.0808
STLS 0.3353 0.3413 0.4400 0.3687 0.0302 0.0303 0.0984 0.0795
PWD 0.2841 0.2884 0.3927 0.3254 - - - -
MLE 0.1348 0.1434 0.2558 0.2069 0.2641 0.2633 0.2691 0.2641
400 obs.
2SLS 0.0584 0.0738 0.8483 0.6704 -0.0257 -0.0297 0.0748 0.0604
A2SLS -0.0111 -0.0368 0.7379 0.5867 -0.0043 -0.0042 0.0697 0.0547
STLS 0.3532 0.3526 0.4023 0.3598 0.0360 0.0387 0.0706 0.0567
PWD 0.2974 0.3077 0.3454 0.3053 - - - -
MLE 0.1466 0.1498 0.2025 0.1687 0.2634 0.2639 0.2658 0.2634
800 obs.
2SLS -0.0569 -0.0569 0.5444 0.4390 -0.0136 -0.0115 0.0482 0.0385
A2SLS -0.0366 -0.0508 0.4701 0.3823 -0.0033 -0.0025 0.0448 0.0359
STLS 0.3532 0.3597 0.3793 0.3533 0.0373 0.0358 0.0582 0.0471
PWD 0.3035 0.3107 0.3287 0.3042 - - - -
MLE 0.1516 0.1539 0.1826 0.1586 0.2653 0.2657 0.2667 0.2653
47