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 . x: 15 0 38 24 31 26 27 –15​ –15 –24 y: 10 –3 27 18 25 18 18 –3 –4 –10 Group of answer choices 2,551 2,451 2,460 2,535 2,560

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