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need help with getting the variance and standard deviation. Note: standard deviation should be expressed...

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Accounting

imageneed help with getting the variance and standard deviation. Note: standard deviation should be expressed in a %.

a. Your portfolio is invested 25 percent each in A and C and 50 percent in B. What is the expected return of the portfolio? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) b-1. What is the variance of this portfolio? (Do not round intermediate calculations. Round your answer to 5 decimal places.) b-2. What is the standard deviation? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)

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