For Exercises 2.23 and 2.24, see page 75; and for 2.25 and 2.26, see pages 77–78.

Question 2.36

2.36 Are they outliers?

Refer to the previous exercise. Delete the four states with high values.

edspend

  1. Find the correlation between spending on education and population for the remaining 46 states.
  2. Do the same for these variables expressed as logs.
  3. Compare your results in parts (a) and (b) with the correlations that you computed with the full data set in Exercise 2.23 and in the previous exercise. Discuss these results.