A second measure, of dispersion, helps capture how broadly based price pressures are.
第二个衡量指标，离散程度，有助于了解价格压力的基础有多普遍。
可汗学院：统计学（视频版）
And that's why we want to come up with measures of dispersion.
这就是为什么我们要提出分散措施的原因。
英语百科
Statistical dispersion
（重定向自Measure of dispersion）
In statistics, dispersion (also called variability, scatter, or spread) denotes how stretched or squeezed a distribution (theoretical or that underlying a statistical sample) is. Common examples of measures of statistical dispersion are the variance, standard deviation and interquartile range.