英语翻译

问题描述:

英语翻译
simple random sampling:A sample of n subjects is selected in such a way that every possible sample of the same size n has the same chance of being chosen

简单随机抽样:由N个个体组成的样本,每个个体都是从具有相同样本容量N和相同几率被抽取的样本中选出