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。
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。
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