名词
中文翻译：经验样本均值
同义词：
['empirical mean', 'empirical average', 'empirical sample average']
例句：
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1. The researchers used an empirical sample mean to estimate the population's average age.
研究人员使用经验样本均值来估计人口的平均年龄。
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2. In statistics, the empirical sample mean is often used as a reference point for comparing data sets.
在统计学中，经验样本均值常被用作比较数据集合的参考点。
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3. The empirical sample mean helps us understand how the population might be different from the sample we have studied.
经验样本均值帮助我们理解总体可能与我们所研究的样本有所不同。