The heights, lengths, and maximum speeds of 11 randomly selected U.S. wooden roller coasters are shown in Table 67 on page 419. Let H be a roller coaster’s height (in feet), and let L be the roller coaster’s length (in feet).
a. Compare the values of H with the values of L by constructing a scatterplot by hand. Assume H is the explanatory variable.
b. Describe the four characteristics of the association. Compute and interpret r as part of your analysis.
c. Draw a linear model on your scatterplot.
d. Use the model to predict the length of a 40-foot-tall wooden roller coaster.