Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for Vanguard Total Stock Index (all stocks). Let y be a random variable representing annual return for Vanguard Balanced Index (60% stock and 40% bond). For the past several years, we have the following data. LUSE SALT (a) Compute Σx, Σχ2, ΣΥ, ΣΥ?. Ex xx² x: 15 0 24 28 15 17 36 -9 -16 -16 y: 21 -8 27 10 10 27 22 -2 -3 -1 Ey 103 X s² (b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x and for y. (Round your answers to four decimal places.) y S X Lower Limit Upper Limit CV x X x (c) Compute a 75% Chebyshev interval around the mean for x values and also for y values. (Round your answers to two decimal places.) X X x x y Use the intervals to compare the two funds. O 75% of the returns for the balanced fund fall within a narrower range than those of the stock fund. O 75% of the returns for the stock fund fall within a narrower range than those of the balanced fund. O 25% of the returns for the balanced fund fall within a narrower range than those of the stock fund. O 25% of the returns for the stock fund fall within a wider range than those of the balanced fund. X X (d) Compute the coefficient of variation for each fund. (Round your answers to the nearest whole number.) y % % Use the coefficients of variation to compare the two funds. O For each unit of return, the stock fund has lower risk. O For each unit of return, the balanced fund has lower risk. O For each unit of return, the funds have equal risk. If s represents risks and x represents expected return, then s/x can be thought of as a measure of risk per unit of expected return. In this case, why is a smaller CV better? Explain. A smaller CV is better because it indicates a higher risk per unit of expected return. A smaller CV is better because it indicates a lower risk per unit of expected return.
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for Vanguard Total Stock Index (all stocks). Let y be a random variable representing annual return for Vanguard Balanced Index (60% stock and 40% bond). For the past several years, we have the following data. LUSE SALT (a) Compute Σx, Σχ2, ΣΥ, ΣΥ?. Ex xx² x: 15 0 24 28 15 17 36 -9 -16 -16 y: 21 -8 27 10 10 27 22 -2 -3 -1 Ey 103 X s² (b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x and for y. (Round your answers to four decimal places.) y S X Lower Limit Upper Limit CV x X x (c) Compute a 75% Chebyshev interval around the mean for x values and also for y values. (Round your answers to two decimal places.) X X x x y Use the intervals to compare the two funds. O 75% of the returns for the balanced fund fall within a narrower range than those of the stock fund. O 75% of the returns for the stock fund fall within a narrower range than those of the balanced fund. O 25% of the returns for the balanced fund fall within a narrower range than those of the stock fund. O 25% of the returns for the stock fund fall within a wider range than those of the balanced fund. X X (d) Compute the coefficient of variation for each fund. (Round your answers to the nearest whole number.) y % % Use the coefficients of variation to compare the two funds. O For each unit of return, the stock fund has lower risk. O For each unit of return, the balanced fund has lower risk. O For each unit of return, the funds have equal risk. If s represents risks and x represents expected return, then s/x can be thought of as a measure of risk per unit of expected return. In this case, why is a smaller CV better? Explain. A smaller CV is better because it indicates a higher risk per unit of expected return. A smaller CV is better because it indicates a lower risk per unit of expected return.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
Related questions
Question
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for Vanguard Total Stock Index (all stocks). Let y be a random variable representing annual return for Vanguard Balanced Index (60% stock and 40% bond). For the past several years, we have the following data.
x: |
15
|
0
|
24
|
28
|
15
|
17
|
36
|
−9
|
−16
|
−16
|
y: |
21
|
−8
|
27
|
10
|
10
|
27
|
22
|
−2
|
−3
|
−1
|
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