Problem 10-8 Risk Premiums [LO 2]

Consider the following table for a period of six years:

	Returns
Year	Large-Company Stocks					U.S. Treasury Bills
1			14.79	%		7.31	%
2			26.50			8.00
3			37.25			5.89
4			23.95			5.17
5			7.20			5.46
6			6.59			7.67

a-1.	Calculate the arithmetic average returns for large-company stocks and T-bills over this time period. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)
a-2.	Calculate the standard deviation of the returns for large-company stocks and T-bills over this time period. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)