Results 31 to 40 of about 7,543,790 (273)

An Alternative Ratio-cum-Product Estimator of Population Mean Using a Coefficient of Kurtosis for Two Auxiliary Variates

open access: yesData Science Journal, 2010
An alternative ratio-cum-product estimator of population mean using the coefficient of kurtosis for two auxiliary variates has been proposed. The proposed estimator has been compared with a simple mean estimator, the usual ratio estimator, a product ...
Rajesh Tailor   +2 more
doaj   +1 more source

Estimation of Population Mean Using Known Correlation Coefficient And Median [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2014
The present paper deals with the two modified ratio estimators for estimation of population mean of the study variable using the linear combination of the known population values of the Correlation Coefficient and the Median of the auxiliary variable ...
J. Subramani, G. Kumarapandiyan
doaj   +1 more source

Improved procedures for mean estimation under non-response

open access: yesAlexandria Engineering Journal, 2022
In this paper, two generalized class such as ratio to exponential and the difference type of estimators have been proposed for estimating the finite population mean by utilizing information on higher order moments of an auxiliary variable in the two ...
Ashok K. Jaiswal   +2 more
doaj   +1 more source

Mean-Related Stochasticity and Population Variability

open access: yesOikos, 1993
Temporal variance in population density V is very generally related to mean density x by the power function, V = ax(b), with the value of b typically ranging from 1 to above 2 in different sets of data. We describe three simple Population dynamic models which are capable of generating variance-mean relationships with the observed range of b values.
Hanski, I., Woiwod, I. P.
openaire   +1 more source

The Mean Drift: Tailoring the Mean Field Theory of Markov Processes for Real-World Applications

open access: yes, 2017
The statement of the mean field approximation theorem in the mean field theory of Markov processes particularly targets the behaviour of population processes with an unbounded number of agents.
A Pourranjbar   +14 more
core   +1 more source

The limits of mean-field heterozygosity estimates under spatial extension in simulated plant populations [PDF]

open access: yes, 2012
Computational models of evolutionary processes are increasingly required to incorporate multiple and diverse sources of data. A popular feature to include in population genetics models is spatial extension, which reflects more accurately natural ...
Allaby, Robin G., Kitchen, James
core   +2 more sources

Neutrosophic Exponential Ratio-Type Estimator for Finite Population Mean [PDF]

open access: yesNeutrosophic Sets and Systems
This paper proposes a neutrosophic exponential-type estimator for finite population mean estimation using auxiliary variables. Traditional statistical estimators often fall short when handling vague or uncertain data.
Anisha Taneja   +2 more
doaj   +1 more source

Genetic investigation on compact cotton (Gossypium hirsutum L.) using its segregating population (F2)

open access: yesElectronic Journal of Plant Breeding, 2019
In all over the World during last three decades, cotton breeders have been revolving to evolve high yielding compact genotypes to have uniform harvesting of bolls.
J. Muthukaruppaiah   +4 more
doaj   +1 more source

MEAN SERUM FERRITIN LEVELS IN TYPE-2 DIABETES MELLITUS IN PAKISTANI POPULATION

open access: yesPakistan Armed Forces Medical Journal, 2021
Objective: To evaluate the mean serum ferritin in type-2 diabetic patients. Study Design: Cross-sectional study. Place and Duration of Study: Department of Medicine, Combined Military Hospital, Peshawar, from Sep 2014 to Feb 2015. Methodology: A
Kamran Ali   +2 more
doaj   +1 more source

History and structure of the closed pedigreed population of Icelandic Sheepdogs [PDF]

open access: yes, 2009
Background - Dog breeds lose genetic diversity because of high selection pressure. Breeding policies aim to minimize kinship and therefore maintain genetic diversity.
Pieter A Oliehoek   +27 more
core   +1 more source

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