Question

Consider the following two stocks. Probabilities (pi ) Stock "a" Stock "b" Recession p1= 31% -4%...

Consider the following two stocks.

Probabilities (pi ) Stock "a" Stock "b"
Recession p1= 31% -4% 4%
Normal p2= 26% 7% -4%
Boom p3= 43% 11% 26%

Expected Return

r¯a = 5.31

r¯b = 11.38

Standard Deviation

SDa = 6.44

SDb = 13.05

Question:

Using the correct answers from the previous questions, what is the correlation between the two stocks? Enter your answer rounded to 2 decimal places.

Corr(a, b) = ?

Homework Answers

Answer #1

Correlation between 2 stocks can be computed with help of below formula -

= Covariance(x,y ) / standard deviation of x * standard deviation of y

and

Here,

Expected Return

r¯a = 5.31

r¯b = 11.38

covariance = 0.31 ( - 0.04 - 0.0531 ) * ( 0.04 - 0.1138 ) + 0.26 ( 0.07 - 0.0531) * ( - 0.04 - 0.1138) + 0.43 ( 0.11 - 0.0531 ) * ( 0.26 - 0.1138)

= 0.31 ( - 0.0931 ) ( - 0.0738) + 0.26 ( 0.0169) ( 0.0738) + 0.43 ( 0.0569) ( 0.1462)

= 0.002129942 + 0.000324277 + 0.003577075

= 0.006031294

Standard Deviation

SDa = 6.44

SDb = 13.05

= 0.006031294 / 0.0084042

= 0.717652364

= 0.72 (approx)

Corr(a, b) = 0.72

Hope it helps!

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