Record Display for the EPA National Library Catalog


Main Title Improvement of Performance of Variable Probability Sampling Strategies.
Author Overton, W. S. ; Stehman., S. V. ;
CORP Author Oregon State Univ., Corvallis. Dept. of Statistics. ;State Univ. of New York Coll. of Environmental Science and Forestry, Syracuse.;Corvallis Environmental Research Lab., OR.
Publisher 1992
Year Published 1992
Report Number EPA/600/A-92/107;
Stock Number PB92-180264
Additional Subjects Sampling ; Population(Statistics) ; Statistical samples ; Probability theory ; Estimating ; Statistical analysis ; Reprints ; Horvitz-Thompson estimation ; Environmental statistics
Library Call Number Additional Info Location Last
NTIS  PB92-180264 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Precision of estimators used with variable probability sampling may be improved either at the design stage or at the analysis stage following selection of the sample. Improvement at the analysis stage is obtained by employing a Horvitz-Thompson difference estimator, which may improve precision even when the response variable is negatively correlated with the inclusion probabilities. In general, optimization of the Horvitz-Thompson difference estimator is achieved by employing bootstrapping to facsimile populations constructed from the sample data; in some cases optimization can be achieved analytically. This strategy focuses sampling considerations on population description in order to improve the facsimile population representation of the real population under study.