Results 21 to 30 of about 614,247 (264)

Analysis of samples from finite population

open access: yesLietuvos Matematikos Rinkinys, 2008
This paper deals with asymptotic properties of probabilitydistributionsof sample statistics when samples are selected from finite populations.These properties also were analysed by P. Erdos, A. Rényi [3] and J. Hájek [4].
Jurgita Turkuvienė   +1 more
doaj   +1 more source

Generalized Estimator of Finite population Variance [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2015
In this paper a generalized class of finite population variance is suggested and its large sample bias and mean square error are derived. Further some special cases of this class are considered along with a numerical example to compute and compare their ...
A.K.P.C. Swain
doaj   +1 more source

Evolutionary Dynamics of Coordinated Cooperation

open access: yesFrontiers in Ecology and Evolution, 2018
In social evolution theory, unconditional cooperation has been seen as an evolutionarily unsuccessful strategy unless there is a mechanism that promotes positive assortment between like individuals.
Hisashi Ohtsuki
doaj   +1 more source

Confidence Intervals in Official Statistics: The Case of Lithuania

open access: yesLithuanian Journal of Statistics, 2012
In the paper, the application of confidence intervals in the surveys of official statistics is discussed. It is noticedthat there are situations where at the first sight natural normal distribution-based confidence intervals are not suitable ...
Andrius Čiginas
doaj   +1 more source

The generalization of ratio-cum product estimator for the arbitrary sample design

open access: yesLietuvos Matematikos Rinkinys, 2009
The generalization of a dual to ratio-cum-product estimator of the finite population total for the arbitrary sample design is given. The approximate variance is calculated and variance estimator is constructed.
Ignas Bartkus, Aleksandras Plikusas
doaj   +1 more source

Investigation of Accuracy of a Calibrated Estimator of a Ratio by Modelling

open access: yesNonlinear Analysis, 2005
Estimator of finite population parameter – ratio of totals of two variables – is investigated by modelling in the case of simple random sampling. Traditional estimator of the ratio is compared with the calibrated estimator of the ratio introduced by ...
V. Chadyšas, D. Krapavickaitė
doaj   +1 more source

Time-Inhomogeneous Finite Birth Processes with Applications in Epidemic Models

open access: yesMathematics, 2023
We consider the evolution of a finite population constituted by susceptible and infectious individuals and compare several time-inhomogeneous deterministic models with their stochastic counterpart based on finite birth processes.
Virginia Giorno, Amelia G. Nobile
doaj   +1 more source

Estimation of Some Proportion in a Clustered Population

open access: yesNonlinear Analysis, 2009
The aim of this paper is to show that the traditional design-based estimator for the proportion of population units, associated with at least one subunit having an attribute of interest using the two-stage sampling design, is biased.
D. Krapavickaitė
doaj   +1 more source

Quasispecies theory for finite populations [PDF]

open access: yesPhysical Review E, 2010
13 pages, 8 ...
Park, J.M.   +2 more
openaire   +4 more sources

Model‐based estimator of total expenditure on environmental protection

open access: yesMathematical Modelling and Analysis, 2007
Expenditure of enterprises on environmental protection has highly positive or zero values. Thus, distribution of such a variable is skewed, and its population variance is high. As a consequence the design‐based estimator of a total expenditure has a high
Danute Krapavickaite
doaj   +1 more source

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