Final answer:
The arithmetic average return for the stock with annual returns of 8%, 2%, and 11% over the past 3 years is 7%.
Step-by-step explanation:
To calculate the arithmetic average return for the stock that had annual returns of 8%, 2%, and 11% over the past 3 years, we simply add up the annual returns and then divide by the number of years.
The arithmetic average return = (8% + 2% + 11%) / 3 = 21% / 3 = 7%