Suppose you hear a comment in the news that says “the volatility of the US stock market is lower for the last few years.” can you support the comment? use the data set provided (in excel) and support or disapprove the comment.
-date in column A is the ending date of each one year period
-annual return in column B is the return of an S&P500-stock-index based hypothetical fund in % for example the 2nd row 1/1/1971 means the return of the market cover one year period ending on 1/1/1971 is 12.77% namely from 1/1/1970 to 1/1/1971
-you can consider the data set as “population”
-The volatility is usually measured by the standard deviation of returns