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抽样误差大小的影响因素有( )

多选题
2021-09-03 17:26
A、总体各单位标志值的变异程度
B、样本单位数的多少
C、抽样方法
D、抽样的组织形式
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正确答案
A@#@B@#@C@#@D

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