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practice problem 3 Asset Return beta St dev A 0 . 1 B 2 0 . 4 Market 0 . 1 0 . 2 Risk
practice problem Asset Return beta St dev A B Market Risk free Find the beta of A Find the return of B Find the beta of market Find the beta of risk free security Find the st dev of risk free security If the correlation between the market and security A is what is the st dev of A beta Asigma Asigma mrho Amsigma m what is the correlation of B and market beta Bsigma Bsigma mrho Bmsigma m if the correlation between A and B is what is the covariance between A and B what is the st dev of the portfolio with of the money is risk free security and rest in A what is the return of that portfolio what are the Xa and Xb which will lead to minimum variance portfolio of just A and B ignore earlier correlation number and assume corrA B minimum variance will be or y axis you want to make the most efficient portfolio remember the CML capital market line you want the portfolio return to be you have dollars which security you will use and what will be your allocation of money to each security beta Asigma amsigma m covariance of return of Am Variance of m where a is the security whose equities beta is calculated and m is the market beta Asigma Aif the correlation between A and is what is the covariance between A and Bsigma mrho Amsigma m beta of equity of security A capm formula also known as capital asset pricing model Era rf betaArmrf
practice problem
Asset Return beta St dev
A
B
Market
Risk free
Find the beta of A
Find the return of B
Find the beta of market
Find the beta of risk free security
Find the st dev of risk free security
If the correlation between the market and security A is what is the st dev of A
beta Asigma Asigma mrho Amsigma m
what is the correlation of B and market
beta Bsigma Bsigma mrho Bmsigma m
if the correlation between A and B is what is the covariance between A and B
what is the st dev of the portfolio with of the money is risk free security and rest in A
what is the return of that portfolio
what are the Xa and Xb which will lead to minimum variance portfolio of just A and B ignore earlier correlation number and assume corrA B
minimum variance will be or y axis
you want to make the most efficient portfolio remember the CML capital market line
you want the portfolio return to be
you have dollars which security you will use and what will be your allocation of money to each security
beta Asigma amsigma m
covariance of return of Am Variance of m
where a is the security whose equities beta is calculated and m is the market
beta Asigma Aif the correlation between A and is what is the covariance between A and Bsigma mrho Amsigma m
beta of equity of security A
capm formula also known as capital asset pricing model
Era rf betaArmrf
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