Using the data I provided, calculate 60 months of returns for the SPDR S&P 500 Index ETF, Microsoft, Exxon, and the iShares 13 Year Treasury Bond ETF. (Please compute simple monthly returns not continuously compounded returns.) Compute the average monthly returns for the SPDR S&P 500 Index ETF, Microsoft, Exxon, and the iShares 13 Year Treasury Bond ETF. If you form an equally weighted portfolio with these three equities and one bond, what is your portfolios average monthly return?

	Monthly Returns
	SPY	SHY	MSFT	XOM
Average	1.34%	0.14%	2.71%	-0.21%

Using the data from problem 1, calculate excess returns for the SPDR S&P 500 Index ETF, Microsoft and Exxon. Use the monthly returns on the iShares 13 Year Treasury Bond ETF as your monthly riskfree return. Compute the average monthly excess returns for the SPDR S&P 500 Index ETF, Microsoft and Exxon. If you form an equally weighted portfolio with these three equities, what is your portfolios average monthly excess return?