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如何计算标准偏差及其在统计中的重要性与应用
本文将详细介绍标准偏差的定义、计算方法以及它在实际应用中的意义。 一、标准偏差的定义 标准偏差(Standard Deviation,简称SD)是反映一组数据离散程度的指标。它越大,说明数据的分布越分散;反之,标准偏差越小,说明数据更集中在平均值附近。标准偏差 ...
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