Mathematics, 04.07.2020 01:01 aleklupo3353
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: 28 0 20 14 20 35 24 -11 -17 -17
Y: 18 -4 13 14 28 17 27 -6 -7 -1
Required:
Compute:
Σx=
Σx^2=
Σy=
Σy^2=
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