plwase explain the steps.

Problem 5 Intro You've collected the following historical rates of return for stocks A and B: Year (t) TA, B, 2016 0.02 0.04 2015 0.08 0.05 2014 0.15 0.07 Attempt 1/10 for 10 pts. Part 1 What was the average annual return for stock A 3+ decimals Submit Part 2 IB Attempt 1/10 for 10 pts. What was the average annual return for stock B? decal Part 3 . Attempt 1/10 for 10 pts. What was the standard deviation of returns for stock A? 3+ decimals Submit Part 4 Attempt 1/10 for 10 pts What was the standard deviation of returns for stock B? 4+ decimals Submit