Click to see additional instructions You obtain a time series of returns on a stock which has the following returns over four years: 10%, 15%, 3%, and -10% (take note the last return is negative ten percent). The average return is 4.5%. Find the standard deviation. Give your answer as a percent and to the nearest 0.01% (e.g. type 3.25 if your answer is three and a quarter percent). %