NEED ASAP

Consider ABC stock with the following returns over the past five years: 17%, -15%, 19%, 29%, and 10%. a. What was the arithmetic average return on ABC stock over this five-year period? (Round the final answer to 1 decimal place.) Average return % b-1. What was the variance of ABC's returns over this period? (Do not round intermediate calculations. Round the final answer to 5 decimal places.) Variance b-2. What was the standard deviation of ABC's returns over this period? (Do not round intermediate calculations. Round the final answer to 1 decimal place.) Standard deviation %