Graphically illustrate the difference between a regression outlier and a good leverage point. That is, plot some points for which y = β1x + β0, and then add some points that represent regression...

Graphically illustrate the difference between a regression outlier and a good leverage point. That is, plot some points for which y = β1x + β0, and then add some points that represent regression outliers and good leverage points.

Use the function winreg to estimate the slope and intercept of the star data using 20% Winsorization. (The data are stored in the file star.dat. See Section 1.8 for how to obtain the data.).