注册会计师 财务管理 价值评估基础15 单项投资风险三把尺 episode artwork

EPISODE · Jun 1, 2026 · 10 MIN

注册会计师 财务管理 价值评估基础15 单项投资风险三把尺

from 飞凡26CPA:财务成本管理|从逻辑推导到高效通关

【本期主题】 彻底搞清单项投资风险衡量——预期值、标准差、变异系数三把尺,以及"平行宇宙"思维实验。【核心案例】 项目甲乙期望报酬率都是100万,甲标准差小→亏损可能性小,但暴富可能性也小;乙标准差大→上下波动剧烈。再加一个预期赚10万的小项目——不能直接比标准差绝对值。【核心逻辑链】第一把尺:预期值(均值):所有可能结果按概率加权平均→平均能赚多少陷阱:预期值不能衡量风险!(平均深度1米的河,中心可能3米深)第二把尺:标准差:衡量随机变量与预期值的离散程度→波动有多剧烈衡量全部风险(系统+非系统)陷阱:不能直接跨量级比较(大象打喷嚏 vs 蚂蚁打喷嚏)第三把尺:变异系数:标准差÷均值→单位预期收益承担的风险(风险收益比/性价比)跨量级比较的唯一公平标尺

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注册会计师 财务管理 价值评估基础15 单项投资风险三把尺

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