Question 13 1 pts If a portfolio had a return of 18%. the risk-free asset return was 3%, and the Sharpe measure is 0.25. What is the standard deviation of the portfolio's excess returns? Round your answer to 4 decimal places. For example if your answer is 3.205%, then please write down 0.0321 Question 14 1 pts Calculate the arithmetic (average) return over the 5-year investment period. Year Price 19 0 1 22 2 20 3 23 4 25 5 24 Round your answer to 4 decimal places. For example, if your answer is 3.205%, then please write down 0.0321 D Question 15 1 pts Calculate the geometric (average) return over the 5-year investment period. Year Price 0 19 1 22 2 20 3 23 4 25 22 5 Round your answer to 4 decimal places. For example, if your answer is 3.205%, then please write down 0.0321