Here are the returns on two stocks.

		Digital Cheese			Executive Fruit
January			+17			+6
February			4			+1
March			+6			+5
April			+8			+15
May			5			+2
June			+4			+4
July			3			4
August			9			3

a-1. Calculate the variance and standard deviation of each stock. (Do not round intermediate calculations. Round your answers to 2 decimal places.)

Digital cheese return

Variance

Standard deviation

Executive fruit return

Variance

Standard deviation

2. Assume these are the stock market and Treasury bill returns for a 5-year period:

Year		Stock Market Return (%)			T-Bill Return (%)
2011			36.13			2.70
2012			29.60			1.20
2013			15.86			0.19
2014			1.98			0.04
2015			17.76			0.06

c. What was the standard deviation of the risk premium? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)