The table below shows annual returns for stocks of companies X and Y. Calculate the arithmetic average returns. In addition, calculate their variances, as well as their standard deviations.

	Returns
Year	X	Y
1	14 %	22 %
2	32	43
3	21	-11
4	-22	-25
5	23	51

Requirement 1:
(a)	The arithmetic average return of company X's stock is:
	(Click to select) 15.37% 17.00% 16.59% 13.60% 11.02%

(b)	The arithmetic average return of company Y's stock is:
	(Click to select) 20.00% 19.52% 12.96% 16.00% 18.08%

Requirement 2:
(a)	The variance of company X's stock returns is: (Do not round intermediate calculations.)
	(Click to select) 0.043730 0.054658 0.035421 0.043726 0.054663

(b)	The variance of company Y's stock returns is: (Do not round intermediate calculations.)