For the data used in Exercise 11, RAN1T1 and RAN2T1 (stored in columns 4 and 5) are
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For the data used in Exercise 11, RAN1T1 and RAN2T1 (stored in columns 4 and 5) are measures of digit naming speed and letter naming speed. Use M regression with Schweppe weights to estimate the regression parameters when predicting WWISST2.
Use the function elimna, described in Chapter 1, to remove missing values. Compare the results with the OLS estimates and βˆ
ch.
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Introduction To Robust Estimation And Hypothesis Testing
ISBN: 9780123869838
3rd Edition
Authors: Rand R. Wilcox
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