Go to www.finance.yahoo.com and download daily data on the Dow Jones Industrial Average (DJIA) since 1928.

a. Sort the series from oldest to newest, present a time series plot of the Dow Jones Industrial Average over the last 80 years, and comment on its long-run movements.

b. Which were the worst and best years in the U.S. stock market?

c. Calculate daily changes and plot the new series. Does the magnitude of the changes in the Dow Jones Industrial Average increase towards the end of the sample?

d. Continuing from (c), can you conclude that the U.S. stock market has been more volatile towards the end of the sample? Why or why not?