I got the answers about Average return and Standard deviation. Please calculate just Variance part please.

Returns Year 13 % 16 12 23 % 28 15 12 18 2 10 Using the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y. (Do not round intermediate calculations. Enter your average return and standard deviation as a percent rounded to 2 decimal places, e.g., 32.16, and round the variance to 5 decimal places, e.g., 32.16161.) 8% 14.40 % Average return Variance Standard deviation 10.84 % 15.57 %