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【判断题】
多阶段抽样是指在整群抽样中，当子群数或子群内部个体数目较多，彼此间的差异不太大时，常采用更经济方法，即不将样本子群众的所有个体作为样本，而是再从中用前述各种随机抽样的方法抽取样本，因而最终样本的获得经过两次抽样，我们称其为整群抽样，同样可做三阶段、四阶段.即多阶段整群抽样。A.
正确
B.
错误
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A.
正确
B.
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