Results 11 to 20 of about 11,567,747 (295)
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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A new population mean estimator under non-response cases
Journal 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
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Mathematical 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
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Study of a Memory Type Shrinkage Estimator of Population Mean in Quality Control Process
IEEE 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
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Advances in Estimation of Sensitive Issues on Successive Occasions
Statistica, 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
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An improved family of estimators for estimating population mean using a transformed auxiliary variable under double sampling [PDF]
Songklanakarin 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
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Generalized Neutrosophic Sampling Strategy for Elevated estimation of Population Mean [PDF]
Neutrosophic 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
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On Influencing Population Means
Epidemiology, 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
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Comparison of lognormal population means [PDF]
Proceedings 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.
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Improved neutrosophic exponential-ratio estimator of population mean with simple random sampling [PDF]
Neutrosophic Sets and SystemsIn 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
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