The article “A Nation Ablaze with Change” (USA Today, July 3, 2001) gave the accompanying data on percentage increase in population between 1990 and 2000 for the 50 U.S. states. Also provided in the table is a column that indicates for each state whether the state is in the eastern or western part of the United States (the states are listed in order of population size):
a. Construct a stem-and-leaf display for percentage growth for the data set consisting of all 50 states
b. Comment on any interesting features of the data set. Do any of the observations appear to be outliers?
c. Now construct a comparative stem-and-leaf display for the eastern and western states. Write a few sentences comparing the percentage growth distributions for eastern and western states.