For Exercises 2.44 and 2.45, see page 82; for 2.46, see page 84; for 2.47, see page 86; for 2.48 and 2.49, see page 88; for 2.50, see page 90; for 2.51, see page 90; for 2.52, see page 91; and for 2.53, see page 94.

Question 2.72

2.72 Add a different outlier

Refer to the previous two exercises. Add an additional case with and to the original data set.

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  1. Repeat the analysis that you performed in the first exercise and summarize your results, paying particular attention to the effect of this outlier.
  2. In this exercise and in the previous one, you added an outlier to the original data set and reanalyzed the data. Write a short summary of the changes in correlations that can result from different kinds of outliers.