From the following details of two stocks A and B, you are required to calculate the Variance and Standard Deviation of the securities.

State	Probability	Security A	Security B
1	10%	25%	20%
2	30%	5%	10%
3	30%	15%	15%
4	30%	20%	25%

(Q1) What is the Expected Return of Security A?

a) 0.145 or 14.5%

b) 0.225 or 22.5%

c) 0.165 or 16.5%

d) None of them

(Q2) What is the Expected Return of Security B?

a) 0.22 or 22%

b) non of them

c) 0.27 or 27%

d) 0.17 or 17%

(Q3) What is the Variance of Security A?

a) 49.50

b) 55.75

c) 47.25

d) None of them

(Q4) What is the Variance of Security B?

a) 28.2

b) 8.2

c) 19.2

d) None of them

(Q5) What is the Standard deviation of Security A?

a) 6.87

b) None of them

c) 20.15

d) 4.57