名词
中文翻译：比例均值
同义词：
['average mean', 'median mean例句：1. In statistics', 'the proportional mean is used to calculate averages for groups of data.（在统计学中，比例均值用于计算数据的组平均数。）']
例句：
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1. In statistics, the proportional mean is used to calculate averages for groups of data.
在统计学中，比例均值用于计算数据的组平均数。
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2.The proportional mean is calculated by dividing the total by the number of observations.
比例均值是通过将总数除以观察数来计算的。
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3. The proportional mean is often used in economics to measure the average income of a population.
比例均值在经济学中常用来衡量一个人口的平均收入。