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提问人：网友lqlq2018
发布时间：2022-01-07
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以下数据描绘了一个由三只股票组词的金融市场，满足单指数模型。
市场指数组合标准差为25%，请计算下列问题。市场指数投资组合的平均超额收益率是()。
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