Problem:
You find a certain stock that had returns of 15 percent, −22 percent, 23 percent, and 10 percent for four of the last five years. The average return of the stock over this period was 9.50 percent.
What was the stock's return for the missing year? (Round your answer to 1 decimal place. (e.g., 32.1))
Stock's return %
What is the standard deviation of the stock's return? (Do not round intermediate calculations and round your final answer to 2 decimal places. (e.g., 32.16))
Standard deviation %