141 Comparing SAT Scores. Refer to Exercise 42 , in which we compared state average SAT scores in 2009 and 2005. The data are saved in the SATSCORES file.

a. Construct side-by-side box plots of the SAT scores for the two years.

b. Compare the variability of the SAT scores for the two years.

c. Are any state SAT scores outliers in either year? If so, identify them.