The table (p..46) reports the one-year percentage change in stock price for all technology companies and all industrial companies on Fortune (Sept. 6,1999) magazine's ranking of the "One Hundred Fastest-Growing

- Companies."

a. Use a statistical software package to construct a stem-and-leaf display for the stock price changes of technology companies. Do the same for industrial companies.

b. Use the results of part a to compare and contrast the stock price changes of the techrialogy and industrial companies.

c. What percentage of the technology companies in the data set had stock prices that more than doubled?