试题与答案

表示率的抽样误差大小的统计指标是A.标准差 B.标准化率 C.方差 D.变异系数 E

题型:单项选择题

题目:

表示率的抽样误差大小的统计指标是

A.标准差

B.标准化率

C.方差

D.变异系数

E.率的标准误

答案:

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