Estimating a Finite Population Mean from Unequal Probability Samples
不等概率抽样下的有限总体均值估计
Two approaches to estimating a finite population mean from unequal probability samples are contrasted. In the prediction approach a model is specified for the population values and is used to predict the nonsampled values. In the generalized regression approach the Horvitz-Thompson estimator of the population mean is modified to allow the introduction of covariate information (Särndal 1980). Generalized regression estimates have the desirable property of asymptotic design…