Results 1 to 10 of about 1,362,891 (269)

Novel imputation methods under stratified simple random sampling

Alexandria Engineering Journal
This paper addresses some classes of combined and separate imputation methods (CSIMs) of the population mean under stratified simple random sampling (SSRS) along with their characteristics.
Anoop Kumar, Shashi Bhushan, Manahil SidAhmed Mustafa, Ramy Aldallal, Hassan M. Aljohani, Fatimah A. Almulhim   +5 more
doaj   +1 more source

Improved neutrosophic exponential-ratio estimator of population mean with simple random sampling [PDF]

Neutrosophic Sets and Systems
In this paper we present a neutrosophic exponential-ratio estimator for calculating the population mean using simple random sampling. In sampling methods classical statistics always depends on exact and complete data, but when we are dealing with unclear
Bhatt Ravi Jitendrakumar, Ashish Kumar , Monika Saini   +2 more
doaj   +1 more source

An Unbiased Estimator of Finite Population Mean Using Auxiliary Information

Journal of Statistical Theory and Applications (JSTA), 2021
In this paper, an unbiased estimator is constructed by using a linear combination of an estimator of study variable and mean per unit estimator of an auxiliary variable under simple random sampling without replacement scheme.
B. Mahanty, G. Mishra
doaj   +1 more source

Sampling design for compliance monitoring of surface water quality: A case study in a Polder area [PDF]

, 2008
International agreements such as the EU Water Framework Directive (WFD) ask for efficient sampling methods for monitoring natural resources. In this paper a general methodology for designing efficient, statistically sound monitoring schemes is described.
Brus, D.J., Knotters, M.
core   +2 more sources

Random Sampling-Arithmetic Mean: A Simple Method of Meteorological Data Quality Control Based on Random Observation Thought

IEEE Access, 2020
The quality control of meteorological data has lately received great attention for its important significance to national ecological security and military security.
Sen Tian, Jin Zhang, Lingyu Chen, Hong Liu, Ying Wang   +4 more
doaj   +1 more source

Limiting Behavior of High Order Correlations for Simple Random Sampling [PDF]

, 2011
For N=1,2,..., let S_N be a simple random sample of size n=n_N from a population A_N of size N, where 0 f as N -> infinity, then N^{k/2}Corr(k) -> [f(f-1)]^{k/2}EZ^k, k even and N^{(k+1)/2}Corr(k) -> [f(f-1)]^{(k-1)/2}(2f-1)(1/3)(k-1)EZ^{k+1}, k odd ...
Walker, Christopher Wayne
core   +1 more source

Enhanced estimation of population mean using simple random sampling

Research in Statistics
The present study suggests an enhanced class of estimators for the population mean estimation utilizing simple random sampling (SRS). The bias, mean square errors (MSE), and minimum MSE of the suggested estimators are computed to the approximation of ...
Anoop Kumar, Asra Sayyed Siddiqui
doaj   +1 more source

Employment Bootstrapping Approach to Finding New Ratio Estimators in Simple Random Sampling [PDF]

المجلة العراقية للعلوم الاحصائية, 2009
This research boils down to find new ratio estimators instead of estimators of (Kadilar and Cingi ;2004) by replacing the regression parameter of the final estimators, which is estimated by ordinary least squares, with new parameter estimated by ...
doaj   +1 more source

Coupling methods for multistage sampling

, 2015
Multistage sampling is commonly used for household surveys when there exists no sampling frame, or when the population is scattered over a wide area. Multistage sampling usually introduces a complex dependence in the selection of the final units, which ...
Chauvet, Guillaume
core   +3 more sources

Random Latin squares and Sudoku designs generation

, 2013
Uniform random generation of Latin squares is a classical problem. In this paper we prove that both Latin squares and Sudoku designs are maximum cliques of properly defined graphs. We have developed a simple algorithm for uniform random sampling of Latin
Fontana, Roberto
core   +1 more source