Functions to calculate some point estimators and estimate their variance under unequal probability sampling without replacement. Single and two-stage sampling designs are considered. Some approximations for the second-order inclusion probabilities (joint inclusion probabilities) are available (sample and population based). A variety of Jackknife variance estimators are implemented. Almost every function is written in C (compiled) code for faster results. The functions incorporate some performance improvements for faster results with large datasets.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this file. A copy of the GNU General Public License is available at http://www.r-project.org/Licenses/ ------------------- This package contains the samplingVarEst (Sampling Variance Estimation) package version 1.5 for R. Authors: Emilio Lopez Escobar [aut, cre, cph] <[email protected]> Ernesto Barrios Zamudio [ctb] <[email protected]> Juan Francisco Munoz Rosas [ctb] <[email protected]>