Using the following returns, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y.

		Returns
Year	X	Y
1	11 %	24 %
2	29	45
3	18	-12
4	-19	-26
5	20	53

Calculate the arithmetic average return for X?

11.80% is correct

Calculate the arithmetic average return for Y?

16.80% is correct

Need help with the rest:

Calculate the variance for X. ?

0.033770

0.041997

0.033597

0.042213

0.027354

Calculate the variance for Y.?

0.120470

0.137145

0.109716

0.150588

0.097581

Calculate the standard deviation for X?

18.38%

20.49%

18.23%

22.97%

14.89%

Calculate the standard deviation for Y.

?34.71%

37.03%

33.12%

43.39%

28.11%