Results 201 to 210 of about 265,026 (252)

A Nationally Representative One Health Multi-Pathogen Serosurvey in Cambodia: Study Protocol for the RACSMEI Mixed-Methods Study

open access: yes
ANTONIOLLI A   +40 more
europepmc   +1 more source

Nested stratified sampling

Model Assisted Statistics and Applications, 2008
This paper deals with the problem of estimation of finite population total under nested stratified sampling plan. Allocation of sample sizes to different primary and secondary strata are obtained for fixed cost and fixed precision. The proposed plan under different types of allocation is compared with usual stratification.
Baidya Nath Mandal   +3 more
openaire   +1 more source

Stratified Sampling

2019
AbstractIn stratified sampling, the N population units are grouped into L strata, independent samples are selected from within each stratum, and unbiased estimation is achieved as a weighted average of stratum-specific estimates. Strata may be natural—pool, riffle, and run habitat unit types in a small stream—or strata may be constructed to ensure that
Ketchakmadze, Ivane, Durglishvili, Nino
  +4 more sources

Stratified and Post-Stratified Sampling

2003
Stratified and post-stratified sampling schemes are useful survey techniques commonly used by government agencies, private consultants, and applied statisticians. Let us differentiate between stratified and post-stratified sampling.
openaire   +1 more source

Stratified Sampling of Convex Quadrilaterals

Journal of Graphics Tools, 2007
We derive a closed-form expression for a smooth uniform bijection from a unit square onto an arbitrary convex planar quadrilateral; that is, a smooth parameterization of the quadrilateral under which the image of equal areas remain of equal area. The properties of the mapping make it well-suited to stratified Monte Carlo sampling and therefore useful ...
James Arvo, Kevin Novins
openaire   +1 more source

Stratified Sampling

2008
John B. Heppner   +104 more
  +6 more sources

On stratified randomized response sampling

Model Assisted Statistics and Applications, 2005
In this paper, we propose a new quantitative randomized response model based on Mangat and Singh [7] two-stage randomized response model. We derive the estimator of the sensitive variable mean, and show that our method is more efficient than other randomized response models suggested by Greenberg et al. [3] and Gupta et al. [4] estimators.
Jea-Bok Ryu   +3 more
openaire   +1 more source

The Problem of Dimensionality in Stratified Sampling

Management Science, 1989
Stratified sampling is perhaps the most natural of the variance reduction techniques. However its use is often frustrated by the high dimensionality of the sample space. This paper investigates the difficulty and suggests a basic sampling scheme for use in such problems.
Russell C. H. Cheng, Teresa Davenport
openaire   +1 more source

Stratified Sampling

2021
Yan Lu, Sharon L. Lohr
openaire   +2 more sources

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