Education and eating fruits and vegetables. Refer to the previous exercise. The BRFSS data file contains a variable called EdCollege, the proportion of adults who have completed college.

(a) Plot the data with Fruits and Vegetables on the x axis and EdCollege on the y axis. Describe the overall pattern of the data.

(b) Add the least-squares regression line to your plot. Does the line give a summary of the overall pattern? Explain your answer.

(c) Pick out a few states and use their position in the graph to write a short summary of how they compare with other states.

(d) Can you conclude that earning a college degree will cause you to eat five servings of fruits and vegetables per day? Explain your answer.