Year

Return

Stock A

Stock B

Stock C

1

15%

12%

5%

2

25%

14%

-6%

3

8%

9%

10%

4

16%

25%

1%

5

5%

3%

15%

Given the data above: What is the standard deviation of returns for stock A?What is the variance of returns for stock B?What is the average return of stock C?What is the average return of a portfolio that has 45% invested in stock A, 35% invested in stock B and the rest invested in stock C?