A stock produced returns of 14 percent, 17 percent, and −10 percent over three of the past four years, respectively. The arithmetic average for the past four years is 6 percent.
Show you work here (be as detailed and organized as possible):
1)
0.06 = (0.14 + 0.17 - 0.1 + Missing return) / 4
0.24 = 0.14 + 0.17 -0.1 + Missing return
Missing return = 0.03 or 3.00%
2)
Geometric average = [(1 + R1)(1 + R2)(1 +R3)(1 + R4)]^1/n - 1
Geometric average = [(1 + 0.14)(1 + 0.17)(1 - 0.1)(1 + 0.03)]^1/4 - 1
Geometric average = [1.236433]^1/4 - 1
Geometric average = 1.0545 - 1
Geometric average = 0.0545 or 5.45%
3)
Standard deviation = {[(0.14 - 0.06)^2 + (0.17 - 0.06)^2 + (-0.1 - 0.06)^2 + (0.03 - 0.06)^2] / 4 - 1}^1/2
Standard deviation = {[0.0064 + 0.0121 + 0.0256 + 0.0009] / 3}^1/2
Standard deviation {0.015}^1/2
Standard deviation = 0.1225 or 12.25%
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