名词
中文翻译：期望系数
同义词：
['expectation coefficient', 'expected value coefficient']
例句：
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1.The coefficient of variation is used to measure the amount of variation in a dataset.
变异系数用于衡量数据集中的变异程度。
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2.The coefficient of determination explains how much of the variance in a dependent variable can be attributed to the independent variables.
决定系数解释了可归因于独立变量的自变量变异程度的多少。
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3. In statistics, the coefficient of correlation measures the strength of the relationship between two variables.
在统计学中，相关系数衡量两个变量之间的关联强度。