Intro The following table shows historical end-of-year prices for a stock. B 1 Year Stock price 2 1 48.32 56.53 3 39.57 37.2 5 39.06 7 44.53 3 2 4 5 4 6 5 6 Attempt 4/10 for 10 pts. Part 1 What was the arithmetic average return? 0+ decimals Submit Attempt 3/10 for 10 pts. Part 2 What was the standard deviation of returns? 3+ decimals