Question

In: Finance

Shares A and B have the following​ returns: Stock A Stock B 1 0.09 0.05 2...

Shares A and B have the following​ returns:

Stock A

Stock B

1

0.09

0.05

2

0.07

0.03

3

0.13

0.04

4

−0.02

0.01

5

0.07

−0.02

a. What are the expected returns of the two​ shares?

b. What are the standard deviations of the returns of the two​ shares?

c. If their correlation is 0.44​, what is the expected return and standard deviation of a portfolio of 52​% share A and 48​% share​ B?

a. What are the expected returns of the two​ shares?

The expected return for share A is .................. (Round to three decimal​ places.)

The expected return for share B is .................. ​(Round to three decimal​ places.)

b. What are the standard deviations of the returns of the two​ shares?

The standard deviation of the return for share A is .................. ​(Round to four decimal​ places.)

The standard deviation of the return for share B is .................. ​​(Round to four decimal​ places.)

c. The expected return for the portfolio is .................. ​​​(Round to four decimal​ places.)

The standard deviation of the return for the portfolio is .................. ​​​(Round to four decimal​ places.)

Solutions

Expert Solution

Part a : Expected returns

Cases

Stock A returns

Stock A returns

1

0.09

0.05

2

0.07

0.03

3

0.13

0.04

4

-0.02

0.01

5

0.07

-0.02

Sum of return

0.34

0.11

Expected return ---> Sum of returns / no. of cases ---> returns / 5

0.068

0.022

Part b : Standard Deviation of Stock A

Cases

Stock A returns

Expected return

Deviation from expected return

Square of deviation from expected return

1

0.0900

0.0680

0.0220

0.0005

2

0.0700

0.0680

0.0020

0.0000

3

0.1300

0.0680

0.0620

0.0038

4

(0.0200)

0.0680

(0.0880)

0.0077

5

0.0700

0.0680

0.0020

0.0000

Step 1 : Sum of (square of deviation from expected return)

0.012

Step 2 : Step 1/ no. of cases --> Step 1 /5

0.002

Step 3 : Square root of step 2 ---> Standard deviation

0.049

Part b : Standard Deviation of Stock B

Cases

Stock B returns

Expected return

Deviation from expected return

Square of deviation from expected return

1

0.0500

0.0220

0.0280

0.0008

2

0.0300

0.0220

0.0080

0.0001

3

0.0400

0.0220

0.0180

0.0003

4

0.0100

0.0220

-0.0120

0.0001

5

-0.0200

0.0220

-0.0420

0.0018

Step 1 : Sum of (square of deviation from expected return)

0.003

Step 2 : Step 1/ no. of cases --> Step 1 /5

0.001

Step 3 : Square root of step 2 ---> Standard deviation

0.025

Part c : Standard Deviation of portfolio

Stock

Weight

Standard Deviation

Square of weights

Square of standard deviation

Square of weights x Square of standard deviation

A

52%

0.049

0.2704

0.0024

0.0007

B

48%

0.025

0.2304

0.0006

0.0001

Step 1 : Sum of (Square of weights x Square of standard deviation)

0.0008

Step 2 : 2 x weight of A x St. Dev. Of A x weight of B x St. Dev. Of B x Correlation between A and B

0.0003

Step 3 : Step 1 + Step 2

0.0011

Step 4 : Square root of Step 3 --> Standard Deviation of portfolio

0.033

Expected return of portfolio

Stock

Weight

Expected return

(Weight x expected return)

A

52%

0.0680

0.0354

B

48%

0.0220

0.0106

Sum of (weight x expected return) --> Portfolio expected return

0.046

Hope this helps you answer the question. Please provide your feedback or rating on the answer.

Thanks


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