Great care was taken to try and get a representative sample of the general population.
受访人群都是经过细心挑选，能够代表大众的。
Middle school students sample included two population, superior grade and inferior grade.
其中，初中生群体又包括快班和慢班两个小的被试群体。
Note:The data in this table is estimated by the Population Sample Survey.
注：本表为人口变动情况抽样调查推算数。
The sample breakdown point of a test for moment estimation of population variance;
检验的样本崩溃点是样本中能逆转判决的离群值的最小比例 。
The sample breakdown point of a test for moment estimation of population variance;
检验的样本崩溃点是样本中能逆转判决的离群值的最小比例 。
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