名词
中文翻译：系数
同义词：
['factor', 'ratio', 'proportion例句：1. The coefficient of variation is a measure of how much data varies from the mean.（变异系数是衡量数据与均值差异程度的指标。）']
例句：
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1. The coefficient of variation is a measure of how much data varies from the mean.
变异系数是衡量数据与均值差异程度的指标。
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2.The coefficient of friction between two surfaces determines how easily they slide over each other.
两个表面之间的摩擦系数决定了它们滑动的难易程度。
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3. The coefficient of determination explains how well a model fits the data.
决定系数解释了模型对数据的拟合程度。