Suppose you observe that Sleppough Inc.'s annual returns for the last five years were, from oldest to most recent, -7.32%, 5.44%, -3.01%, -0.24%, and 2.65%. What is Sleppough's geometric mean of returns for the five year period? Submit your answer as a percentage and round to two decimal places (ex. 0.00%)
The returns are: -7.32%, 5.44%, -3.01%, -0.24%, and 2.65%
Number of observations is 5
Now,
(1-7.32%)=0.9268
(1+5.44%)=1.0544
(1-3.01%)=0.9699
(1-0.24%)=0.9976
(1+2.65%)=1.0265
Geometric mean=(0.9268*1.0544*0.9699*0.9976*1.0265)^(1/5) -1
Here, 1/5 refers to the 1/(Number of total observations)
=(0.970585449)^(1/5) -1
=0.994046625 -1
=-0.005953375 or -0.60% (Rounded to 2 decimal places)
Answer: Hence, the geometric mean of returns for the 5 year period is -0.60%
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