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。
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。
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.
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