名词
中文翻译：差异系数
同义词：
['difference coefficient', 'coefficient of variation', 'variance coefficient']
例句：
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1. The coefficient of variation is a measure of how much a variable varies from its mean value.
变异系数是一个衡量变量与其均值之间变化程度的指标。
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2.The coefficient of variation is used in statistical analysis to determine the amount of variation in a dataset.
在统计学分析中，变异系数用于确定数据集中的变异量。
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3. In engineering, the coefficient of variation is often used to assess the quality of materials and processes.
在工程领域，变异系数常被用来评估材料和工艺的质量。