计算正态样本的期望极差
本文探讨了如何计算正态分布样本中最大与最小值之差（即极差）的期望值。作者分析了不同样本量下期望极差的数值特性，给出了近似公式与计算方法，帮助统计学家在实际应用中更准确地评估数据的离散程度。
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