You are considering investing either of the three stocks- A, B and C. The following table provides the information regarding the stocks

Returns (in percent)

Probability

Stock A

Stock B

Stock C

0.20

2

-3

5

0.50

10

8

8

?

15

20

12

Based on the above information

a)Calculate the expected rate of returns and variance for each of the three stocks?

(5 marks)

b) Calculate the coefficient of variation for each security?