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[单选题]

24.均数的应用

A.均数用来描述一组变量值的离散程度 

B.均数不适用于呈正态分布的资料 

C.均数只能反映数据集中趋势，对服从正态分布的资料，应把均数与离散趋势指标标准差结合起来，可全面地反映其分布的特征 

D.均数用来描述结果的变异 

E.均数适用于偏态分布的数据 

参考答案与解析：

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