Using the information below, what was the standard deviation of a portfolio that was equal-weighted (1/3 in each) in the three stocks? Year LAX return UWL return WIS return 2016 7% 7% 16% 2017 5% 8% -2% 2018 18% 17% |-2% 2019 4% 4% 10% 2020 11% 14% 17% Enter your answer in percent form without the percent sign (e.g., for 20% enter 20 not 0.2), and round to the nearest two decimal places