Question

You are trying to develop a strategy for investing in two different stocks. The anticipated annual...

You are trying to develop a strategy for investing in two different stocks. The anticipated annual return for a​ $1,000 investment in each stock under four different economic conditions has the probability distribution shown to the right. Complete parts​ (a) through​ (e) below.

Returns

Probability

Economic Condition

Stock X

Stock Y

0.1

Recession

−40

−170

0.3

Slow growth

20

60

0.4

Moderate growth

90

140

0.2

Fast growth

150

190

a. Whats the expected return for stock X?

b. Whats the expected return for stock Y?

c. Whats the standard deviation for stock X?

d. Whats the standard deviation for stock Y?

e. Compute the covariance of stocks X and Y?

Homework Answers

Answer #1

ANSWER

from above:

Probability P X Y P*X P*Y P*X^2 P*Y^2 XY*P
0.1 -40 -170 -4 -17 -160 -2,890 -680
0.3 20 60 6 18 120 1,080 360
0.4 90 140 36 56 3,240 7,840 5,040
0.2 150 190 30 38 4500 7,220 5,700
total 68 95 7,700 13,250 10,420

a)

expected return for stocks X E(X) = =68

b)

expected return for stocks Y = =95

c)

here E(X2 )= =7,700

therefore,

standard deviation for stocks X =(E(X2 ) -(E(X))2)1/2 =55.4617

d)

E(Y2 )= =13,250

standard deviation for stocks Y =(E(Y2 ) -(E(Y))2)1/2 =65

e)

here E(XY)= =10,420

therefore,

covariance of stocks X and Y =E(XY)-E(X)*E(Y) =3,960

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