1 poir QUESTION 24 You find a certain stock that had returns of 14 percent, 27 percent, 19 percent, and 21 percent for four of the last stock's returns? five years. The average return of the stock over this period was 9.5 percent. What is the standard deviation of the 11.67 percent 12.90 percent O14.14 percent O18.47 percent 20.59 percent