Results 11 to 20 of about 767,011 (273)

Evaluation of groundwater quality using multivariate, parametric and non-parametric statistics, and GWQI in Ibadan, Nigeria

open access: yesWater Science, 2023
An attempt was made to assess the properties of groundwater in the Ibadan Metropolitan area, Nigeria by applying multivariate statistical methods on samples collected from various parts of the study area.
Emmanuel Oluwafemi Thomas
doaj   +1 more source

Determination of the Characteristics of Non-Stationary Random Processes by Non-Parametric Methods of Decision Theory

open access: yesComputation, 2023
This article is devoted to methods of processing random processes. This task becomes particularly relevant in cases where the random process is broadband and non-stationary; then, the measurement of a random process can be associated with an assessment ...
Bulat-Batyr Yesmagambetov
doaj   +1 more source

Parametric Statistical Models

open access: yes, 2021
Now that we have introduced probability models, we have the tools we need to put our statisticians’ hats on. We want to make a probabilistic model that best describes the world around us. How is it that we can best move from our set of observations to a good model—a model that not only describes our samples, but the process that generated them? In this
Göran Kauermann   +2 more
openaire   +1 more source

A Novel Statistical Multi-Channel Busy Recognition Mechanism in the MAC Layer for Airborne Tactical Networks

open access: yesIEEE Access, 2017
The traditional MAC protocol in ad hoc networks includes carrier sensing to judge the busy/idle state of a channel. However, in airborne tactical networks, the results of carrier sensing are usually inaccurate due to the wide distribution of nodes, large
Zheng Fang, Bo Zheng, Wei Zhao, Qing Zhu
doaj   +1 more source

Comparison of the strength of trend presence criteria in time series

open access: yesАвіаційно-космічна техніка та технологія, 2023
The subject of research is methods, mathematical models, and methods of continuous analysis of a multidimensional set of output variables and state variables of power and energy installations built on the basis of gas turbine engines, which in general ...
Volodymyr Myrhorod, Iryna Hvozdeva
doaj   +1 more source

QUALITY PARAMETRIC STATISTICS OF RETROSPECTIVE PREDICTIVE ESTIMATES

open access: yesВісник Національного технічного університету «ХПÌ». Серія: Стратегічне управління, управління портфелями, програмами та проектами, 2015
The normalizing transformation of retrospective equation has been offered to solve the task of comparative analysis of retrospective predictive estimates which allows to form a set of quantity-related quality parametric statistics of retrospective ...
Юрий Александрович РОМАНЕНКОВ
doaj   +1 more source

Normality assessment, few paradigms and use cases

open access: yesRomanian Journal of Laboratory Medicine, 2022
Background: The importance of applying the normality tests is underlined by the way of continuing the statistical protocol for numerical data within inferential statistics, respectively by the parametric or non-parametric tests that we will apply further
Avram Călin, Mărușteri Marius
doaj   +1 more source

Parametric and Nonparametric Methods in Medical Statistics

open access: yesЭпидемиология и вакцинопрофилактика, 2015
The article is devoted to the conditions of applicability of parametric and nonparametric methods, including criticism of frequent methodological errors.
A. N. Gerasimov, N. I. Morozova
doaj   +1 more source

Parameter estimation of ODE's via nonparametric estimators [PDF]

open access: yes, 2007
Ordinary differential equations (ODE's) are widespread models in physics, chemistry and biology. In particular, this mathematical formalism is used for describing the evolution of complex systems and it might consist of high-dimensional sets of coupled ...
Brunel, Nicolas J-B.
core   +9 more sources

A Comparison of Nonparametric Statistics and Bootstrap Methods for Testing Two Independent Populations with Unequal Variance

open access: yesInternational Journal of Analysis and Applications, 2023
The common parametric statistics used for testing two independent populations have often required the assumptions of normality and equal variances. Nonparametric tests have been used when assumptions of parametric tests cannot be achieved.
Wandee Wanishsakpong   +2 more
doaj   +1 more source

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