Results 31 to 40 of about 614,247 (264)

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

Approximations to distribution of median in stratified samples

open access: yesLietuvos Matematikos Rinkinys, 2011
We consider an Edgeworth type approximation to the distribution function of sample median in the case of stratified samples drawn without replacement. We give explicit expression of this approximation, and also its empirical version based on bootstrap ...
Andrius Čiginas, Tomas Rudys
doaj   +1 more source

Polygenic Adaptation in a Population of Finite Size

open access: yesEntropy, 2020
Polygenic adaptation in response to selection on quantitative traits has become an important topic in evolutionary biology. Here we review the recent literature on models of polygenic adaptation.
Wolfgang Stephan, Sona John
doaj   +1 more source

Biological control via "ecological" damping: An approach that attenuates non-target effects [PDF]

open access: yes, 2015
In this work we develop and analyze a mathematical model of biological control to prevent or attenuate the explosive increase of an invasive species population in a three-species food chain. We allow for finite time blow-up in the model as a mathematical
Beauregard, Matthew   +3 more
core   +3 more sources

Design-Based Ratio Estimators and Central Limit Theorems for Clustered, Blocked RCTs

open access: yes, 2021
This article develops design-based ratio estimators for clustered, blocked randomized controlled trials (RCTs), with an application to a federally funded, school-based RCT testing the effects of behavioral health interventions.
Kautz, Tim   +3 more
core   +1 more source

Estimation of confidence intervals for quantiles in a finite population

open access: yesMathematical Modelling and Analysis, 2008
Confidence intervals provide a way of reporting an estimate of a population quantile along with some information about the precision of estimates. Some procedures that may be used to obtain estimates of confidence intervals for quantiles in a finite ...
Viktoras Chadyšas
doaj   +1 more source

Bootstrap, jackknife and Edgeworth approximations for finite population L-statistics

open access: yesLietuvos Matematikos Rinkinys, 2010
In this paper we give exact bootstrap estimators for the parameters defining one-term Edgeworth expansion of distribution function of finite population L-statistic and compare these estimators with corresponding jackknife estimators. We also compare `````
Andrius Čiginas
doaj   +1 more source

An Extension of Generalized Linear Models to Finite Mixture Outcome Distributions

open access: yes, 2016
Finite mixture distributions arise in sampling a heterogeneous population. Data drawn from such a population will exhibit extra variability relative to any single subpopulation.
Morel, Jorge G.   +2 more
core   +1 more source

Coverage Properties of a Neural Network Estimator of Finite Population Total in High-Dimensional Space

open access: yesJournal of Mathematics, 2022
The problem in nonparametric estimation of finite population total particularly when dealing with high-dimensional datasets is addressed in this paper.
Festus A. Were   +4 more
doaj   +1 more source

The consistency of bootstrap and jackknife variance estimators for finite population L-statistics

open access: yesLietuvos Matematikos Rinkinys, 2012
For the linear combinations of order statistics (L-statistics), we present conditions sufficient for the consistency of their finite-population bootstrap variance estimator and the classical jackknife variance estimator.
Andrius Čiginas
doaj   +1 more source

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