How do I do this without excel using a TI-84 calculator?

Year	Returns
	X	Y
1	15%	22%
2	29	30
3	10	10
4	22	27
5	10	21

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 answers as a percent rounded to 2 decimal places, e.g., 32.16, and round the variance answers to 5 decimal places, e.g., .16161.)