1) Stocks A, B, C and D have standard deviations, respectively, of 20%, 5%, 10% and 15%. Which one is the riskiest?

a) Stock A

b) Stock B

c) Stock C

d) Stock D

2) Find the standard deviation for a security that has 3 one-year returns of -5%, 15% and 20%.

a) 6.25%

b) 13.23%

c) 11.41%

d) 5%