Over the past four years,a stock produced returns of 13,6,-5,and 18 percent,respectively.What is the standard deviation of these returns?
A) 8.63 percent
B) 9.93 percent
C) 9.97 percent
D) 10.11 percent
E) 10.15 percent

Question

Quizplus · Accepted Answer

Mean = (0.13 + 0.06 - 0.05 + 0.18) / 4 = 0.08 Var = [(0.13 - 0.08)² + (0.06 - 0.08)² + (-0.05 - 0.08)² + (0.18 - 0.08)²] / (4 - 1) = 0.009933 Std Dev = √ (0.009933) = 9.97 percent

Over the Past Four Years,a Stock Produced Returns of 13,6,-5,and