10.16 Impact of an unusual observation. Refer to Exercise 10.14. Baruch College was removed from this analysis because it was deemed an outlier. Let’s investigate its impact on the fit.

  1. (a) Refit the model using the entire sample of 25 schools. Create a table that summarizes the model estimates with and without this case.

  2. (b) Describe the impact this observation has on the fit of the linear regression model.

  3. (c) If you were writing a report for publication, would you include the fit with or without this case? Explain your answer.