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 2.8

2.8 What's wrong?

Explain what is wrong with each of the following:

  1. If two variables are negatively associated, then low values of one variable are associated with low values of the other variable.
  2. A stemplot can be used to examine the relationship between two variables.
  3. In a scatterplot, we put the response variable on the x axis and the explanatory variable on the y axis.