Answer:
C) 8.75%
Explanation:
Number of periods = 4 years
Given return rates = 20%, -10%, 20%, and 5%
To obtain the arithmetic average annual return, add the return rates given for all periods and divide the sum by the number of periods.
[tex]AAR = \frac{20-10+ 20+ 5}{4} \\AAR=8.75\%[/tex]
Over four years, the S&P 500 index delivered an arithmetic average annual return of 8.75%.