This paper deals with the incomplete sample estimation of finite population mean in existing of nonrespondent sampling units.
本文讨论了存在不回答样本单位时，有限总体均值的缺损样本估计。
The present balanced two-layer sample rotation system is applicable only to the monthly survey with two-stage sample designs and with small primary sampling units.
目前的平衡两层次样本轮换模式只适用于一级单元规模较小时的两阶段抽样月度调查。
John determined that the acceptable risk of assessing control risk too low is 10%. He selected a sample of 60 sampling units and tested without any deviation found.
约翰评定评估信赖过度风险为10%。他选择了60个抽样单位为样本，而且考试中没有发现任何偏差。
Indeed, neonatal units are increasingly turning to music to calm infants during common painful procedures, such as blood sampling with heel pricks.
确实，新生儿病房更趋向于用音乐让婴儿们在感到疼的时候平静下来，例如在脚跟抽血时。
According to the date of basic units census, this paper designs the sampling frame about the sampling survey of enterprises below designated size in wholesale and retail sale trades.
本文以全国基本单位普查资料为依托，对规模以下批发和零售贸易业抽样调查的抽样框进行设计，设计的思路和方法对其他小企业的抽样调查也具有一定的参考价值。
The method for retaining sampled units in successive sampling survey for changed probability of selection is introduced.
介绍了连续抽样中概率发生变化时保留样本的方法。
Methods A large-scale survey was conducted at 250 medical health units based on stratified sampling.
方法使用分层抽样的方法在全国范围内抽取250家医疗机构开展大规模调查。
Over the years, been rated as "advanced unit", "Top Ten Enterprises", "quality of trust units", "China quality Long March," Product sampling of qualified recommended units.
多年来，被评为“先进单位”“十佳企业”“质量信得过的单位”“中国质量万里行”产品抽检合格推荐单位。
Over the years, been rated as "advanced unit", "Top Ten Enterprises", "quality of trust units", "China quality Long March," Product sampling of qualified recommended units.
多年来，被评为“先进单位”“十佳企业”“质量信得过的单位”“中国质量万里行”产品抽检合格推荐单位。
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