For the law schools discussed in Exercise 2.67, and using the data in file XR02067,
a. Construct a scatter diagram where the dependent variable is the percentage of graduates who were employed immediately upon graduation, and the independent variable is the reputation score provided by the lawyers/judges. Do schools given higher scores by the lawyers/judges also seem to have a higher percent- age of their graduates employed immediately upon graduation?
b. Fit a linear equation to the scatter diagram. Is the slope positive or is it negative? Is the sign of the slope consis- tent with your intuitive observation in part (a)?