Results 1 to 10 of about 660,342 (187)

A Study of Sample Size for Two-Stage Cluster Sampling [PDF]

open access: yesKorean Journal of Applied Statistics, 2011
In a large scale survey, cluster sampling design in which a set of observation units called clusters are selected is often used to satisfy practical restrictions on time and cost. Especially, a two stage cluster sampling design is preferred when a strong intra-class correlation exists among observation units.
Jong-Ho Song, Hea-Sung Jea, Min-Gue Park
openaire   +2 more sources

Using Judgment Post Stratification in Two Stage Cluster Sampling

open access: yesپژوهش‌های ریاضی, 2021
The judgment post stratification is a method of stratification of observation by using a key variable, such that stratification will be done after selecting the sample. In this paper, this method will use in two stage cluster sampling.
Ali Najafi Majid Abadi   +2 more
doaj   +2 more sources

Edgeworth expansions for two‐stage sampling with applications to stratified and cluster sampling [PDF]

open access: yesCanadian Journal of Statistics, 2015
AbstractA two‐term Edgeworth expansion for the standardized version of the sample total in a two‐stage sampling design is derived. In particular, for the commonly used stratified and cluster sampling schemes, formal two‐term asymptotic expansions are obtained for theStudentizedversions of the sample total.
Sherzod M Mirakhmedov   +2 more
exaly   +6 more sources

Bayesian Predictive Inference for a Finite Population Proportion: Two-Stage Cluster Sampling

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 1993
SUMMARY Given binary data from a two-stage cluster sample, we present a method to carry out Bayesian predictive inference for a finite population proportion. Our probabilistic specification should be useful for many surveys of this type and yields simple analytical expressions for the prior and posterior mean and variance. Within cluster
Nandram, B., Sedransk, J.
openaire   +3 more sources

Two-stage clustering based effective sample selection for classification of pre-miRNAs

open access: yes2010 IEEE International Conference on Bioinformatics and Biomedicine (BIBM), 2010
To solve the class imbalance problem in classification of pre-miRNAs with ab initio method, a novel sample selection method is proposed according to the characteristics of pre-miRNAs. Real/pseudo pre-miRNAs are clustered based on their stem similarity and their distribution in high dimensional sample space respectively.
Ping Xuan   +6 more
openaire   +2 more sources

Assessment of the Effect of Six Methods of Analysis and Different Sample Sizes for Biomass Estimation in Grasslands of the State of Puebla, Mexico

open access: yesLand, 2021
In the assessment of natural resources, such as forests or grasslands, it is common to apply a two-stage cluster sampling design, the application of which in the field determines the following situations: (a) difficulty in locating secondary sampling ...
Efraín Velasco-Bautista   +3 more
doaj   +1 more source

Precision of Design Effect in Cluster Sampling [PDF]

open access: yesThe Egyptian Statistical Journal, 1993
A simulation study is performed to examine the precision of design effect in single-stage and two-stage cluster sampling without stratification and equal cluster sizes. Interest is focused on the effect on precision of such factors as sample size, number
M. Y. Radwan, Z.A. El-Beshir
doaj   +1 more source

The Relationship between Social Participation and Sense of Security among Women in Ilam City [PDF]

open access: yesمطالعات زن و خانواده, 2020
The current study has been carried out in order to evaluate and investigate the relationship between women’s social participation and their sense of security in Ilam City.
Mansoureh Zaraan   +3 more
doaj   +1 more source

Estimation of a quantile in finite population

open access: yesLietuvos Matematikos Rinkinys, 2002
An estimator of the quantile of a study variable distribution function in finite population and its confidence interval is proposed. The estimator is adapted to the two-stage cluster sample which is used in a household budget survey carried out in ...
Danutė Krapavickaitė
doaj   +3 more sources

Optimal Design of Electrically Fed Hybrid Mars Ascent Vehicle

open access: yesAerospace, 2021
The optimal design of the propulsion system for a potential Mars Ascent Vehicle is analyzed, in the context of the Mars Sample Return Mission. The Mars Ascent Vehicle has to perform an initial ascent phase from the surface and then circularize into a 170
Lorenzo Casalino   +2 more
doaj   +1 more source

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