It's a very important observation in finance that returns on a lot of speculative assets have fat-tailed distributions.

在金融界中，这是一种重要的观测方法，许多投机性资产的收益，都是服从长尾分布的。

youdao

This is because in fat-tailed distributions, the mean is affected by outliers and therefore one needs many years of data to arrive at a stable estimate.

在厚尾分布中，平均值会受到异常值的影响，因而需要好多年的数据才能得出稳定的估计。

youdao

It's a very important observation in finance that returns on a lot of speculative assets have fat-tailed distributions.

在金融界中,这是一种重要的观测方法,许多投机性资产的收益,都是服从长尾分布的

耶鲁公开课 - 金融市场课程节选

This refers to random variables that have fat-tailed distributions-- random variables that occasionally give you really big outcomes.

这就表示,服从长尾分布的随机变量,这些数据出现极端值的概率比较大

耶鲁公开课 - 金融市场课程节选

By contrast, in fat-tailed distributions, the median is extremely small compared to the mean, meaning that the probability of infrequent events is enormous.

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