Standard deviation for common stock of US Air Inc.
The common stock of US Air Inc. had annual returns of 15.6 %, 2.4 % , -11.8 % and 32.9% over the past 4 years respectively. What is the standard deviation of these returns.? a. 13.29 percent b. 14.14 percent c. 16.50 percent d. 17.78 percent e. 19.05 percent