This isn't really statistics anymore, but it's a concept that I want to include in this lecture.

这不再是统计学概念了,我以这个概念作为这堂课的结尾

耶鲁公开课 - 金融市场课程节选

This is another concept that is very basic to statistics, but it has particular use in finance, so I'll give you a financial example.

这是统计学中又一个基本概念,在金融学中广泛使用,那我就举一个金融领域的例子

耶鲁公开课 - 金融市场课程节选