Given the$$ spreadsheet, LOADING...$,$ containing the realized return of the$$ S&P $500$ from$1926-2014.$ Starting in$1929,$ divide the next $80$ years$(1929-2008)$ of the sample into four periods of $20$ years each. For each$20-$year period, calculate the final amount an investor would have earned given a $$$$1$ comma $750$ initial investment.$$ Also, express your answer as an annualized return. If risk were eliminated by holding stocks for $20$ years, what would you expect to$$ find? What can you conclude about$$ long$-$run diversification?