For Exercises 2.1 and 2.2, pages 64–65; for 2.3 and 2.4, see page 65; for 2.5 and 2.6, pages 66–67; and for 2.7, see page 68.

Question 2.9

2.9 Make some sketches

For each of the following situations, make a scatterplot that illustrates the given relationship between two variables.

  1. No apparent relationship.
  2. A weak negative linear relationship.
  3. A strong positive relationship that is not linear.
  4. A more complicated relationship. Explain the relationship.