Given the preceding data and the fact that
Calculate the following:
(a) The mean return for each security
(b) The variance of each security’s return
(c) The covariance of returns between each security
Answer to relevant QuestionsUsing the data in Problem 5 and assuming an equally weighted portfolio, calculate the following: Assume that all assumptions of the single-index model hold, except that the covariance between residuals is a constant K instead of zero. Derive the covariance between the two securities and the variance on a portfolio. What is the optimum portfolio assuming short sales if RF = 5% and the data from Problem 1 are used? In Problem 1 Consider the choice shown in Problem 3. The probability of a $5 return is 1/2 and of a $12 return is 1/4. How much would these probabilities have to change so that the investor is indifferent between investments A and B? In ...Assume that you expect that the average return on a security in various markets is as shown in the following table. Assume further that the historical correlation coefficients shown in Table 12.1 are a reasonable estimate of ...
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