Question

Below is a table that exhaustively lists the three possible economic growth situations for the next...

Below is a table that exhaustively lists the three possible economic growth situations for the next year and the probability corresponding to each economic situation. The Fund 1 (X) return rate in the different economic growth situation is listed in the table

economic growth Probability    Fund (X) (%).
Recession ? -20
Stable growth 0.6 12
Strong growth 0.3 24

(a) (1 point) What is the probability of Recession?

  1. (b) (3 points) Calculate the expected return rate for Fund 1 and the standard deviation of the return rate for Fund 1.

  2. (c) (3 points) There is a Fund 2 with an expected return rate 7.9% and where the standard deviation of the return rate is 10.7238%. Also we know the correlation coefficent of the Fund 1 and Fund 2 is −0.8187. What is the covariance of the Fund 1 and Fund 2?

  3. (d) (3 points) A portfolio consists of 55% invested in Fund 1 and 45% invested in Fund 2. Calculate the standard deviation of the return for this portfolio.

Homework Answers

Answer #1

a)

b)

The expected value and standard deviation of the return rate is obtained using the formula,

From the data values,

economic growth Probability, P(X) Return rate, X X*P(X) X-E[X] (X-E[X])^2 P(X)*(X-E[X])^2
Recession 0.1 -20 -2 -32.4 1049.76 104.976
Stable growth 0.6 12 7.2 -0.4 0.16 0.096
Strong growth 0.3 24 7.2 11.6 134.56 40.368
Total 12.4 145.44

c)

Where standard deviation of fund 1 (X) = 12.0599%, standard deviation of fund 1 (Y) = 10.7238% and correlation = -0.8187.

d)

Using the properties of variance (such that Var(cX)=c*Var(X) and Var(X+Y)=Var(X)+Var(Y))

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