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: |
30 |
0 |
17 |
38 |
38 |
34 |
25 |
−16 |
−22 |
−22 |
y: |
10 |
−4 |
16 |
14 |
20 |
20 |
20 |
−8 |
−1 |
−6 |
(a) Compute Σx, Σx2, Σy, Σy2.
Σx | Σx2 | ||
Σy | Σy2 |
(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 two decimal places.)
x | y | |
x | ||
s2 | ||
s |
(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 | y | |
Lower Limit | ||
Upper Limit |
from above:
a)
Σx= | 122.00 | Σx2= | 7082.0000 |
Σy= | 81.00 | Σy2= | 1869.0000 |
b)
x | y | |
x̅ = | 12.20 | 8.10 |
s2 | 621.51 | 134.77 |
s | 24.93 | 11.61 |
c)
x | y | ||
lower limit | -37.66 | -15.12 | |
upper limit | 62.06 | 31.32 |
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable...
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: 13 0 22 33 20 27 19 −20 −13 −10 y: 16 −5 25 21 23 20 15 −7 −4 −2 (a) Compute Σx,...
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for the Vanguard Total Stock Index (all Stocks). Let y be a random variable representing annual return for the Vanguard Balanced Index (60% stock and 40% bond). For the past several years, assume the following data. Compute a 75% Chebyshev interval around the mean for x-values and also for y-values. Round your answers to the nearest hundredth. x: 13 0...
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for the Vanguard Total Stock Index (all Stocks). Let y be a random variable representing annual return for the Vanguard Balanced Index (60% stock and 40% bond). For the past several years, assume the following data. 15 0 38 21 31 23 24 -15 -15 -21 6 -4 28 18 22 17 18 -4 -5 -6 The sample means...
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: 26 0 26 32 23 29 32 −23 −15 −24 y: 9 −10 20 23 23 17 17 −8 −10 −7 a. Use the...
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Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for the Vanguard Total Stock Index (all Stocks). Let y be a random variable representing annual return for the Vanguard Balanced Index (60% stock and 40% bond). For the past several years, assume the following data. Compute the coefficient of variation for each fund. Round your answers to the nearest tenth. -13 -3 -16 -7 130 38 23 35 25...
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Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for the Vanguard Total Stock Index (all Stocks). Let y be a random variable representing annual return for the Vanguard Balanced Index (60% stock and 40% bond). For the past several years, assume the following data. Compute . 12 0 39 23 31 25 26 -12 -12 -23 9 -3 26 15 24 17 15 -3 -4 -9
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Question 10 Not yet answered Points out of 4.00 P Flag question Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for the Vanguard Total Stock Index (all stocks). Let y be a random variable representing annual return for the Vanguard Balanced Index 60% stock and 40% bond For the past several years, assume the following data. Compute the coefficient of variation for each fund. Round your answers to...