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anyuna7 · 2021年05月13日

问一道经典题

NO.PZ2016082406000081

问题如下:

Which of the following loans has the lowest credit risk?

选项:

Loan
One-Year Probability of Default
Loss Given Default
Remaining Term(Months)
A.
1
1.99%
60%
3
B.
2
0.90%
70%
9
C.
3
1.00%
75%
6
D.
4
0.75%
50%
12

解释:

ANSWER: A

The one-year PD needs to be adjusted to the maturity of the loan, using (1dm)T{(1-d^m)}^T where dmd^m is computed from (1dm)12=(1d){(1-d^m)}^{12}={(1-d)}.

这题说4/333是条件概率 但是按照上课老师讲的应该是边际违约概率啊?

1 个答案

袁园_品职助教 · 2021年05月14日

同学你好!

课上那个方法对应本题的4/333是conditional的,marginal的定义式是t时刻 的cumulative PD减去t-1时刻的cumulative PD。