机构地区: 中国人民大学统计学院
出 处: 《北方工业大学学报》 2009年第1期73-76,共4页
摘 要: 基于调查数量特征的敏感性问题的随机变量乘法模型提出了一种改进模型,该模型比随机变量乘法模型有着更高的精度.由此,将此改进模型推广到最优分配下的分层抽样情形,在总体适合分层时,能提高总体估计量的估计精度;另外,由于在不同层中可以使用不同的随机化装置,这在实际的调查操作中有着更强的可行性. A new improved model , which is more accurate, is advanced, based on the randomized variables muhiplicative model for surveying sensitivity questions. When it is used in the case of stratified sampling under optimal allocation, and the population is fit for stratification, efficiency of estimators based on the new model can be further improved. Besides, it is more practicable because we can use various randomized equipment in different layers.