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a portfolio is composed of two stocks, a and b. stock a has a standard deviation of return of 17% while stock b has a standard deviation of return of 15%. the correlation coefficient between the returns on a and b is 0.36. stock a comprises 32% of the portfolio while stock b comprises the rest. what is the standard deviation of the return on this portfolio?

User Gonjila
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Final answer:

The standard deviation of the return on this portfolio is 16.412%.

Step-by-step explanation:

To calculate the standard deviation of a portfolio composed of two stocks, we can use the formula:

Std. Dev. of Portfolio = sqrt(wa^2 x sa^2 + wb^2 x sb^2 + 2 x wa x wb x sa x sb x cor)

where wa and wb are the weights of stocks A and B in the portfolio, sa and sb are the standard deviations of returns for stocks A and B, and cor is the correlation coefficient between the returns of the two stocks.

Plugging in the given values, we have:

wa = 0.32, wb = 1 - wa = 0.68

sa = 17%, sb = 15%, cor = 0.36

Substituting these values into the formula, we get:
Std. Dev. of Portfolio = sqrt((0.32^2 x 0.17^2) + (0.68^2 x 0.15^2) + (2 x 0.32 x 0.68 x 0.17 x 0.15 x 0.36)) = 0.16412 or 16.412%

User LuckySlevin
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