You've collected the following historical rates of return for stocks A and B: Year (t) RA,t RB,t 2016 0.02 0.01 2015 0.08 0.05 2014 0.12 0.07 Attempt 1/10 for 10 pts. Part 1 What was the average annual return for stock A 3+ decimals Attempt 1/10 for 10 pts. Part 2 What was the average annual return for stock B? 4+ decimals Attempt 1/10 for 10 pts. Part 3 What was the standard deviation of returns for stock A? 3+ decimals Attempt 1/10 for 10 pts. Part 4 What was the standard deviation of returns for stock B? 4+ decimals