College football players trying out for the NFL are given the Wonderlic standardized intelligence test. The file Wonderlic contains the average Wonderlic scores of football players trying out for the NFL and the graduation rate for football players at selected schools (data extracted from S. Walker, "The NFL's Smartest Team," The Wall Street Journal, September 30, 2005, pp. W1, W10).
a. Construct a scatter plot with averageWonderlic score on the X axis and graduation rate on the Y axis.
b. What conclusions can you reach about the relationship between the averageWonderlic score and graduation rate?