An investor has collected a sample of annual stock returns for UGA Incorporated over the past 5 years. The returns are as follows: 3 10 YEAR 2016 2017 2018 2019 2020 RETURN -20% 20% 40% 25% -50% 9 12 What is the standard deviation of these returns? 37.01% 5 33.11% 26.79% 35.46% 29.73%