he W Equity portfolio has a standard deviation of returns of 8. The R Bond portfolio has a standard deviation of returns of 6. If the Covariance of these portfolio is 5 what is this portfolio's coefficient of correlation?
Solution:
The formula for calculating the coefficient of correlation of a portfolio is
ρ WR= COVWR/ (σW* σR)
Where
ρ WR = Coefficient of correlation of a portfolio
COVWR = Covariance between Portfolio W & Portfolio R
σW = Standard Deviation of Returns of Equity Portfolio W
σR = Standard Deviation of Returns of Bond Portfolio R
As per the information given in the question we have
COVWR = 5 ; σW = 8 ; σR = 6
Applying the above values in the formula we have
= 5 / (8 * 6 )
= 5 /48
= 0.1042 ( when rounded off to four decimal places )
= 0.10 ( when rounded off to two decimal places )
Thus the portfolio's coefficient of correlation = 0.1042
= 0.10 ( when rounded off to two decimal places )
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