Problem #2: The following table shows realized rates of return for two stocks during a six year sample period.

	A	B	C
1	Year	Stock A	Stock B
2	1	5%	15%
3	2	-22%	-14%
4	3	-6%	-5%
5	4	5%	28%
6	5	14%	8%
7	6	20%	3%

Part 1) What is the arithmetic average return for stock B?

Part 2) What is the variance for stock B? (Hint: variance formula in Excel starts with var)