Question: For the star data in Figure 6.3, which are stored in the file star.dat, eliminate the four outliers in the upper left corner of the

For the star data in Figure 6.3, which are stored in the file star.dat, eliminate the four outliers in the upper left corner of the plot by restricting the range of the x values. Then using the remaining data, estimate the standard error of the least squares estimator, the M-estimator with Schweppe weights, as well as the OP and MGV estimators. Comment on the results.

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