Results 11 to 20 of about 7,543,790 (273)

A Quantile Functions-Based Investigation on the Characteristics of Southern African Solar Irradiation Data

open access: yesMathematical and Computational Applications, 2023
Exploration of solar irradiance can greatly assist in understanding how renewable energy can be better harnessed. It helps in establishing the solar irradiance climate in a particular region for effective and efficient harvesting of solar energy ...
Daniel Maposa   +2 more
doaj   +1 more source

Study of a Memory Type Shrinkage Estimator of Population Mean in Quality Control Process

open access: yesIEEE Access, 2021
Controlling and improving quality is a major business strategy for various organizations. A company gains an advantage over its competitors by maintaining a high level of quality for products or services and pleasing its customers or clients.
Garib Nath Singh   +3 more
doaj   +1 more source

A new population mean estimator under non-response cases

open access: yesJournal of Taibah University for Science, 2022
Using the information in x, we consider a new estimator that uses an exponential function to estimate the unknown population mean of y in the case of non-responding units. These cases are divided into two categories as Case I and Case II.
Ceren Unal, Cem Kadilar
doaj   +1 more source

Advances in Estimation of Sensitive Issues on Successive Occasions

open access: yesStatistica, 2020
Surveys related to sensitive issues are accompanied with social desirability response bias which flaw the validity of analysis. This problem became serious when sensitive issues are estimated on successive occasions.
Kumari Priyanka, Pidugu Trisandhya
doaj   +1 more source

Generalized Neutrosophic Sampling Strategy for Elevated estimation of Population Mean [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
One of the disadvantages of the point estimate in survey sampling is that it fluctuates from sample to sample due to sampling error, as the estimator only provides a point value for the parameter under discussion.
Subhash Kumar Yadav   +1 more
doaj   +1 more source

An improved family of estimators for estimating population mean using a transformed auxiliary variable under double sampling [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2023
The performance of a population mean estimator can be improved by transformation techniques using a subset of the population data. An improved family of estimators for population mean has been proposed under double sampling using a transformed ...
Nuanpan Lawson
doaj  

On Influencing Population Means

open access: yesEpidemiology, 2012
Findings on the existence or the lack of temporal trends in sperm concentration at the population level have been used to discuss the role of environmental factors (including endocrine disruptors) on male fertility. An assumption sometimes made 1 is that temporal trends in biological parameters such as sperm concentration will parallel temporal trends ...
Slama, Rémy, Siroux, Valérie
openaire   +5 more sources

Improved neutrosophic exponential-ratio estimator of population mean with simple random sampling [PDF]

open access: yesNeutrosophic Sets and Systems
In this paper we present a neutrosophic exponential-ratio estimator for calculating the population mean using simple random sampling. In sampling methods classical statistics always depends on exact and complete data, but when we are dealing with unclear
Bhatt Ravi Jitendrakumar   +2 more
doaj   +1 more source

Comparison of lognormal population means [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
Comparisons of two lognormal population means are investigated. For large samples, the conventional test for significance of the population means is the ordinary Student t-test with normal critical value. By Chen and Loh’s result (Ann. Statist. 20 (1992)), however, the transformed t-test based on log-data is asymptotically more powerful than the ...
openaire   +1 more source

Dynamical Mean Field approximation of a canonical cortical model for studying inter-population synchrony [PDF]

open access: yes, 2011
The goal of this paper is twofold. We propose and explore a model to study the synchronization among populations in the canonical model of the neocortex proposed previously by (R.J. Douglas, K.A.C. Martin, A functional microcircuit for cat visual cortex.
Ramó, Roberto Carlos Sotero Diaz
core   +2 more sources

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