For Exercises 2.77 to 2.79, see page 101; and for 2.80, see page 102.

Question 2.82

2.82 What's wrong?

Each of the following statements contains an error. Describe each error and explain why the statement is wrong.

  1. An outlier will always have a large residual.
  2. If we have data at values of equal to 1, 2, 3, 4, and 5, and we try to predict the value of at using a least-squares regression line, we are extrapolating.
  3. High correlation implies causation.