13 12 Returns for the Dayton Company over the last 3 years are shown below. What's the standard deviation of the firm's returns? (Hint: This is a sample, not a complete population, so the sample standard deviation formula should be used.) Do not round your intermediate calculations. Return 20.50% 25 14 2 Year -12.50% 3 40.00% 37.53% Ob 14.15% 0265496 d 21.67% e11.55%