stratified sample

英 美
  • 分层取样
  • sample n.样品;样本vt.采样;取样;品尝,体验
  • stratified adj.形成阶层的;分为不同等级的;分层的;成层的动词stratify的过去式和过去分词形式.
Noun:
  1. the population is divided into strata and a random sample is taken from each stratum

【邻近词汇】