10. Using the data in Table 10.2, a. What was the average dividend yield for the SP500 from 2002-2011? b. What was the volatility of the dividend yield? c. What was the average annual return of the SP500 from 2002-2011 excluding dividends (i.e., from capital gains only)? d. What was the volatility of the S&P 500 returns from capital gains? e. Were dividends or capital gains a more important component of the S&P 500's average returns during this period? Which were the more important source of volatility?