It is well known that stock prices are a leading indicator of a recession. This means that several months before a recession begins, stock prices usually drop (foreshadowing a drop in the economy), and several months before a recession ends, stock prices usually increase (foreshadowing the end of the recession). Use the data in the file P2_71.XLS to argue that the Dow Jones Index was a leading indicator for both the April 1960—February 1961 recession and the December 1969—November 1970 recession.