也称随机抽样
Also known as random sampling
以上为机器翻译结果，长、整句建议使用 人工翻译 。
一种抽样方法。人口中的每个人都有平等的被抽取的机会。也称随机抽样。
A kind of sample in which every member of the population has an equal or known chance of being selected into the sample.
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