任选样品，概率样本

[数]概率样本

probability theory───[数]概率论

probability theories───[数]概率论

profitability studies───盈利能力研究

probabiliorism───概率论

probabilism───n.盖然论；或然论

probabilistically───有概率性地；盖然论地

probabilities───可能性；[统计]概率（probability的复数）

The raw response rate for this probability sample and the weighted response rate was 58 %.───该样本概率的原始反应率为52%,加权后反应率为58%.

A one-stage probability sample in which every member of the population has an equal chance of selection.───一种单一步骤概率抽样法。人口中的每一个人都有同等的被抽取的机会。

A type of probability sample in which aggregations of sampling units, called clusters, are sampled at some stage in the process .───是一种将样本单元聚集在一起的随机抽样法。样本群在抽样的某一步骤被抽出。

A list of some population from which a probability sample is actually drawn.───进行概率抽样的人口名单。