Q1)
Returns on stocks X and Y are listed below:
Please round your answer to the nearest hundredth. Note that the correct answer will be evaluated based 
Q2)
Returns on stocks X and Y are listed below:
Period 
1 
2 
3 
4 
5 
6 
7 
Stock X 
4% 
7% 
2% 
40% 
0% 
10% 
1% 
Stock Y 
2% 
5% 
7% 
4% 
6% 
11% 
4% 
Consider a portfolio of 10% stock X and 90% stock Y.
What is the mean of portfolio returns?
Please specify your answer in decimal terms and round your answer to the nearest thousandth (e.g., enter 12.3 percent as 0.123).
Q3)
Returns on stocks X and Y are listed below:
Period 
1 
2 
3 
4 
5 
6 
7 
Stock X 
4% 
7% 
2% 
40% 
0% 
10% 
1% 
Stock Y 
2% 
5% 
7% 
4% 
6% 
11% 
4% 
Consider a portfolio of 10% stock X and 90% stock Y.
What is the (population) standard deviation of portfolio returns?
Please specify your answer in decimal terms and round your answer to the nearest thousandth (e.g., enter 12.3 percent as 0.123).
Note that the correct answer will be evaluated based
on the fullprecision result you would obtain using Excel.
Q4)
Summary statistics for returns on two stocks X and Y are listed below.
What is the mean of portfolio returns? Please specify your answer in decimal terms and round your answer to the nearest thousandth (e.g., enter 12.3 percent as 0.123). 
Q5)
Summary statistics for returns on two stocks X and Y are listed below.

Mean 
Variance 
Stock X 
2.85% 
0.005000 
Stock Y 
5.91% 
0.006000 
The covariance of returns on stocks X and Y is 0.002800. Consider a portfolio of 30% stock X and 70% stock Y.
What is the variance of portfolio returns?
Please round your answer to six decimal places.
Note that the correct answer will be evaluated based
on the fullprecision result you would obtain using Excel.
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