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位置2的问题 Which of the following are assumptions of the capital asset pricing model (CAPM)? I. A risk-free asset has no systematic risk. II. Beta is a reliable estimate of total risk. III. The reward-to-risk ratio is constant. IV. The market rate of return can be approximated. I and III onlyI, III, and IV only I, II, III, and IV II and IV onlyII, III, and IV only清除选择

Options
A.I and III only
B.I, III, and IV only
C.I, II, III, and IV
D.II and IV only
E.II, III, and IV only
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这道题考察对资本资产定价模型(CAPM)基本假设的理解。下面逐一分析各选项,以便把握哪些假设成立,哪些不成立。 Option A: 'I and III only'。 - I:“无风险资产没有系统性风险”。这与CAPM的核心相符:无风险资产被视为具备零系统性风险,因此其β为零,这一说法正确。 - III:'回报-风险比是恒定的'。在CAPM框架内,预期超额收益与贝塔的乘数关系是 E(R_i)-R_f = β_i [E(R_m)-R_f],......Login to view full explanation

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