Problem 10-7 Calculating Returns and Variability

	Returns
Year	X			Y
1		15	%		20	%
2		18			30
3		9			16
4		9			15
5		10			20

Using the returns shown above, calculate the average returns, the variances, and the standard deviations for X and Y (Do not round intermediate calculations and round your final percentage answer to 2 decimal places. (e.g., 32.16) and variances to 5 decimal places. (e.g., 32.16161))

	X	Y
Average returns	%	%
Variances
Standard deviations	%	%