m****g
发帖数: 148 | 1 各位前辈，关于BS，我有个问题想请教一下。
其实挺简单，但是我脑子就转不过来这个弯：
Assume 100,000 risks have an inherent hazard, as measured by their true
claim frequency, of .05.
The number of persons claim-free for the past t years assuming
a Poisson approximation to the distribution is as follows:
t=o t=1 t=2 t=3
100,000 95,123 90,484 86,071
貌似这里的 95123=100000 × Prob（X=0), where X is a poisson with mean 0.05.
请问是这样么？
多谢各位 | I**R
发帖数: 1309 | 2 did u verify the other t values?
【在 m****g 的大作中提到】
: 各位前辈，关于BS，我有个问题想请教一下。
: 其实挺简单，但是我脑子就转不过来这个弯：
: Assume 100,000 risks have an inherent hazard, as measured by their true
: claim frequency, of .05.
: The number of persons claim-free for the past t years assuming
: a Poisson approximation to the distribution is as follows:
: t=o t=1 t=2 t=3
: 100,000 95,123 90,484 86,071
: 貌似这里的 95123=100000 × Prob（X=0), where X is a poisson with mean 0.05.
: 请问是这样么？
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