On every confidence level, we use the degree of departure from central point as the measure of risk.
On every confidence level, we use the degree of departure from central point as the measure of risk.
当预期收益率给定时，证明最小风险选择组合的存在性。
On every confidence level, we use the degree of departure from central point as the measure of risk.
当预期收益率给定时，证明最小风险选择组合的存在性。