以下关于均值、众数和中位数的说法中,哪一项是错误的?( )
A.均值代表样本数据的多数水平
B.均值容易受到样本数据中极端值的影响
C.众数不具有唯一性
D.中位数不受样本数据中极端值的影响
正确答案是A
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