We also need some measure of-- We've been talking here about measures of central tendency only and in finance we need, as well, measures of dispersion, which is how much something varies.

我们也需要其他的指标,目前为止,我们只讨论了集中趋势指标,在金融学中,我们同样需要,离散趋势指标以衡量参数的变化程度

耶鲁公开课 - 金融市场课程节选

Well, there's another way to look at returns -those are the dollar-weighted returns -and the dollar-weighted returns actually do a better job of describing the experience of the group of investors that participated in these funds.

还有另一种考察回报率的参数,货币加权回报,货币加权回报实际上,是描述基金参与者收益的,一个更好的指标

耶鲁公开课 - 金融市场课程节选