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面猪登🐷💰💄✈️ · 2021年11月15日

老师,请问这里为什么不是D?

NO.PZ2016072602000029

问题如下:

Consider a bank that wants to have an amount of capital so that it can absorb unexpected losses corresponding to a firmwide VAR at the 1 % level. It measures firmwide VAR by adding up the VARs for market risk, operational risk, and credit risk. There is a risk that the bank has too little capital because

选项:

A.

It does not take into account the correlations among risks.

B.

It ignores risks that are not market, operational, or credit risks.

C.

It mistakenly uses VAR to measure operational risk because operational risks that matter are rare events.

D.

It is meaningless to add VARs.

解释:

B is correct. VAR can be added across different types of risk, but this will provide a conservative estimate of capital as diversification effects are ignored. So answer a. would be for too much capital. Answer c. is not correct because rare events can be factored into operational VAR. Most likely, the bank may have too little capital for other types of risk than those measured by these three categories.

既然算出来的值太小,那不会应该操作失误,譬如输入错误数据不足等这之类的数据令本该大的值却变小了吗?

2 个答案
已采纳答案

品职答疑小助手雍 · 2021年11月16日

同学你好,因为直接加和意味着相关性等于1,相关性的取值范围是-1到1,所以直接加和已经算出来的三大风险已经是最大的范畴了,题目问为啥这个值会小,那就只能是还有第四第五等等个风险没计量到。所以选B。

品职答疑小助手雍 · 2021年11月15日

同学你好,这题考点就是如果三大风险直接相加依旧算小了,可以解释这个现象的选项。

那就是有其他风险没计入。选B.

你这个想法首先,这些记录错误本身就是放在操作风险里的,其次如果你说的是三大风险计量出错的话,那这题没有出题的意义了,所有的问异常或者错误的题都可以通过这个理由解释。

面猪登🐷💰💄✈️ · 2021年11月15日

那B的选项是怎样解释题目呀?

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