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皓月 · 2023年02月13日

我知道A是正确答案

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NO.PZ201702190100000105

问题如下:

Which of the following statements should not be included in Abell’s report to management regarding the use of risk measures in capital allocation decisions?

选项:

A.

VaR measures capture the increased liquidity risk during stress periods.

B.

Stress tests and scenario analysis can be used to evaluate the effect of outlier events on each line of business

C.

VaR approaches that can accommodate a non-normal distribution are critical to understand relative risk across lines of business.

解释:

A is correct.

VaR measures do not capture liquidity risk. "If some assets in a portfolio are relatively illiquid, VaR could be understated, even under normal market conditions. Additionally, liquidity squeezes are frequently associated with tail events and major market downturns, thereby exacerbating the risk".

考点:VaR

解析:

A选项:VaR的缺点之一,没有考虑流动性风险,错。

B选项:Stress tests and scenario analysis可以用于异常事件,对。

C选项:非正态分布的VaR方法对理解业务条线的风险很关键,对。在实际中,非正态分布的情况更常见,所以如果VaR的计算中,没有正态分布这一假设,那么这种方法对风险衡量更重要。

我想问的是C选项,VaR的计算到底是需要normal distribution的假设还是不需要?

1 个答案

星星_品职助教 · 2023年02月13日

同学你好,

计算VaR有多种方法,如果是用parametric method来计算VaR,就需要有正态分布的假设。

如果用基于实际历史数据的historical simulation method来得到VaR,则不需要有正态分布的假设。