Estimation of Means and Totals from Finite Populations of Unknown Size
规模未知的有限总体均值与总量估计
Problems of estimating the sum of metric values of a finite population of unknown number of elements are discussed for the case in which independent samples are available. Methods of point estimation applicable to the situation, frequent in economics, in which the samples are not simple random samples but rather are probability samples, with the sampling weights unknown, are investigated. Approximations to the expectation and variance of two alternative estimators are…