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当前学科:医学统计学
题目:
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关于抽样误差描述错误的是()
A . 是不可避免的
B . 是可控制的
C . 与调查误差不同
D . 抽样方法不同,产生的抽样误差也不同
E . 不是抽样所特有的误差
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