If you follow through from the independent theory, there's one of the basic relations in probability theory-- it's called the binomial distribution.
如果继续往下看,在概率论里有一个基本的概念,叫做二项分布
In order to explain it-- I had to write down the binomial distribution to explain it properly.
要解释这一点,我要先在黑板上写一个二项分布,以便于解释清楚这个问题
It uses the binomial distribution to calculate the probability of getting any specific number of accidents.
保险公司就可以用二项分布公式,来计算特定数目事故发生的概率
To actually apply this it helps to go to something called the normal approximation to the binomial, because it's kind of difficult to compute this formula.
在实际应用这些公式的时候,需要运用二项分布的正态近似定理,因为二项分布公式的值很难计算
Maybe they didn't write down the binomial distribution, but they explained the idea of insurance and it didn't sound right to the typical nineteenth century American woman.
也许他们并不会给客户写二项分布函数,但会向他们灌输保险的理念,但这看起来对19世纪的美国女性,并不奏效
I didn't use the normal approximation there-- that's obvious--I used the binomial itself.
我显然并没有用到正态分布,我用了二项分布
I think that may be the first-known statement of the binomial distribution.
我认为这就是最早的,关于二项分布的阐述
So, that is the binomial distribution.
二项分布的介绍到此为止
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