Please show calculations on Excel.

STANDARD & POOR'S 500 (S&P 500) SHARPE RATIO
Date	S&P 500 adjusted price	Annual return	One year risk-free return	S&P minus risk-free			S&P 500 minus risk-free return
31-Dec-89	329.08					Mean
31-Dec-90	343.93		6.82%			Standard deviation
31-Dec-91	408.78		4.12%			Sharpe ratio