Results 11 to 20 of about 3,268,717 (248)
A chain ratio exponential type estimator in two-phase sampling using auxiliary information
Statistica, 2014 This paper advocates the problem of estimating the population mean of the study variable y using the information on two auxiliary variables x and z. We have suggested the family of chain ratio exponential type estimators in two-phase (or double) sampling.
Rohini Yadav +3 more
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Derived variables for longitudinal studies [PDF]
Proceedings of the National Academy of Sciences, 1999 Suppose that for each individual a vector of features is measured at a number of time points. We look for a transformation of the features, the same at all time points, that will induce a simple dependency structure. In the simplest situation this requires that a certain asymmetric matrix has real nonzero eigenvalues. Extensions are considered.
Cox, D. R., Wermuth, Nanny
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Photometric studies of be star variability [PDF]
Experimental Astronomy, 1994 Be stars are hot stars which have shown emission in at least one Balmer line on at least one occasion. As the definition implies, the Be phenomenon can be variable with time: on time scales of days to decades as the circumstellar disc develops and disperses; on time scales of days to months in a few Be stars which are interacting binaries; on time ...
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The age of cataclysmic variables: A kinematical study [PDF]
Journal of End-to-End-testing, 2010 32 pages, 11 figures and 4 tables, accepted for publication in New ...
Ak, T. +4 more
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Natural convection of Al2O3-water nanofluid with variable properties in a square enclosure with heat source and heat sink on the vertical walls [PDF]
مجله مدل سازی در مهندسی, 2017 The buoyancy-driven fluid flow and heat transfer in a square cavity with partially active side walls filled The buoyancy-driven fluid flow and heat transfer in a square cavity with partially active side walls filled which the length is equal to half of ...
G.A. Sheikhzadeh +3 more
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Neutrosophic Ranked Set Sampling Scheme for Estimating Population Mean: An Application to Demographic Data [PDF]
Neutrosophic Sets and SystemsThe primary goal of this study is to address the limitations of classical statistics in handling ambiguous or indeterminate data. The best alternative to classical and fuzzy statistics for handling such data uncertainty is neutrosophic statistics, which ...
Rajesh Singh , Anamika Kumari
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Frontiers in Psychiatry, 2023 BackgroundIntensive care unit (ICU) nurses are highly prone to occupational stress and burnout, affecting their physical and mental health. The occurrence of the pandemic and related events increased nurses’ workload and further exacerbated their stress ...
Pratima Saravanan +5 more
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Optimal Neutrosophic Difference to Log-Type Estimator for Population Mean: Some Numerical and Simulation Studieshttps://fs.unm.edu/NSS/11NeutrosophicDifference.pdf [PDF]
Neutrosophic Sets and SystemsIndeterminacy in the data are commonly observed in various fields like biomedicine, finance, marketing and other sphere of sciences, where classical statistical methods is a challenging task to deal such type of data.
SM Afsar Basha, Mahamood Usman
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Studies in the variability of pock counts [PDF]
Epidemiology and Infection, 1957 1. The relationship has been examined between the variance and the mean of pock counts made by a number of different workers.2. In all cases the variance was considerably greater than that expected if the distributions were of the Poisson form. Recent work of Westwoodet al.(1957) suggests that variation approaching the Poisson expectation can be ...
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A family of estimators for variance estimation
Research in StatisticsThe potential of this study for estimating the finite population variance of the study variable of a class of estimators by utilizing an auxiliary variable in simple random sampling is enormous.
Housila P. Singh +3 more
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