NO.PZ2018091701000083
问题如下:
One limitation of VaR is that it ignores the extreme negative outcomes in the left-hand tail but beyond the VaR. Which of the following can measure the potential losses of these events?
选项: Relative
VaR
marginal VaR
C.Conditional VaR
解释:
C is correct.
考点:Conditional VaR
解析 : VaR的缺点之一就是忽略了VaR值以左的极端损失 。 Conditional VaR是等于或者超过VaR值的损失平均值 , 考虑了所有VaR值以左的极端损失 , 用来衡量tail risk 。
但是CVaR不适用于左尾是连续的数据的时候,只有在给定数据的情况下才成立;还有对左尾求marginalVaR不是可以更好的看一下边际风险么?