Results 31 to 40 of about 7,510,284 (318)
The Generalized Price Equation: Forces That Change Population Statistics
Frontiers in Ecology and Evolution, 2020 The Price equation partitions the change in the expected value of a population measure. The first component describes the partial change caused by altered frequencies. The second component describes the partial change caused by altered measurements.
Steven A. Frank, William Godsoe
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Predictive Estimation of Finite Population Mean Using Exponential Estimators [PDF]
Statistika: Statistics and Economy Journal, 2014 This paper suggested the ratio-type and product-type exponential estimators of the population mean of a study variable through predictive approach using Bahl and Tuteja (1991) ratio-type and product-type exponential estimators as a predictor of the mean
Housila P. Singh +2 more
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Population rate codes carried by mean, fluctuation and synchrony of neuronal firings
, 2008 A population of firing neurons is expected to carry information not only by mean firing rate but also by fluctuation and synchrony among neurons. In order to examine this possibility, we have studied responses of neuronal ensembles to three kinds of ...
Amit +63 more
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The limits of mean-field heterozygosity estimates under spatial extension in simulated plant populations [PDF]
, 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
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Mean-Related Stochasticity and Population Variability
Oikos, 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.
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Inferring the Population Mean with Second-Order Information in Online Social Networks. [PDF]
Entropy (Basel), 2018 With the increasing use of online social networking platforms, online surveys are widely used in many fields, e.g., public health, business and sociology, to collect samples and to infer the population characteristics through self-reported data of ...
Chen S, Lu X, Liu Z, Jia Z.
europepmc +2 more sources
Estimation of Population Mean Using Known Correlation Coefficient And Median [PDF]
Journal 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
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Improved procedures for mean estimation under non-response
Alexandria 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
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Data 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
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Fluctuations and correlations in population models with age structure
, 2000 We study the population profile in a simple discrete time model of population dynamics. Our model, which is closely related to certain ``bit-string'' models of evolution, incorporates competition for resources via a population dependent death probability,
Bernadelli H. +3 more
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