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【判断题】
等距抽样是以个体的自然组为单位进行抽样的方法。在具体的研究中，有时由于总体的数量比较多等原因，以个体为单位抽样不方便，甚至不可能。而以一个组为单位抽样更方便。这时就要采用整群抽样的方法。作为整群抽样中的样本单位，可以是一个教学班、一所学校、一个区、一个市县等。整群抽样先要确定划分群的标准。()
A.
正确
B.
错误
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