Results 1 to 10 of about 7,093,858 (209)

Pearson-Fisher Chi-Square Statistic Revisited

open access: yesInformation, 2011
The Chi-Square test (χ2 test) is a family of tests based on a series of assumptions and is frequently used in the statistical analysis of experimental data.
Radu E. Sestraş   +4 more
doaj   +3 more sources

Computation of cumulative density of noncentral chi-square distribution in Excel [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2022
Noncentral distributions are obtained by transformation of their respective central distributions, and are identified by a noncentrality parameter. The noncentrality parameter measures the degree to which mean of test statistics departs, when the null ...
Sambaraju, Prasanth
doaj   +1 more source

Performance analysis of WSN–FSO system modeled by Gamma–Chi-square channel distribution [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2023
This paper presents the WSN–FSO (wireless sensor network–free-space optics) system based on CCR (corner cube retroreflector) and modeled with Gamma–Chi-square distribution.
Jelena Todorović   +4 more
doaj   +1 more source

On the Distribution of Positive Linear Combination of Inverted Chi-Square Random Variables [PDF]

open access: yesThe Egyptian Statistical Journal, 2007
The distribution of positive linear combination of inverted chi-squared variables is considered for the general case involving inverted chi-square variables with odd or even degrees of freedom.
Amina Saleh
doaj   +1 more source

Contributions to the Weighted Non-Central Chi-Square Distribution [PDF]

open access: yesThe Egyptian Statistical Journal, 2012
In this paper, we consider the probability density function (pdf) of the weighted non-central chi-square distribution with degrees of freedom. This pdf is presented in the literature as an infinitesum. Consequently we give another expression for this pdf
Sahar A.Ibrahim   +2 more
doaj   +1 more source

A study of microbial distribution and cell phone hygiene awareness at Universiti Malaysia Kelantan, Jeli Campus [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2020
Cell phones are an essential device for today’s people. The warm environment on the cell phone may cause continuous growth of bacteria which can include harmful pathogens.
Valentina Anne Lopez   +3 more
doaj   +1 more source

New upper bounds for noncentral chi-square cdf

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2020
Some new upper bounds for noncentral chi-square cumulative density function are derived from the basic symmetries of the multidimensional standard Gaussian distribution: unitary invariance, components independence in both polar and Cartesian coordinate ...
Valeriy A. Voloshko, Egor V. Vecherko
doaj   +1 more source

COMPARISON OF GEV AND GUMBLE’S DISTRIBUTION FOR DEVELOPMENT OF INTENSITY DURATION FREQUENCY CURVE FOR FLOOD PRONE AREA IN SABAH [PDF]

open access: yesMalaysian Journal of Geosciences, 2018
Rainfall data has a significant role in hydrological design which is, it’s produce the intensity duration frequency curve. IDF curve gives critical information that needed in the design of water management infrastructure, it gives information by ...
Nicklos Jefrin   +5 more
doaj   +1 more source

Linear combination of chi-squares for multinomial process monitoring

open access: yesGestão & Produção, 2021
: Marcucci (1985) proposed a chi square goodness of fit statistic based generalized p-chart for multinomial process monitoring. A chi square distribution quantile was considered as a control chart limit.
Ramzi Talmoudi   +2 more
doaj   +1 more source

Calculation of deception probability of netted radar based on non-central chi-square distribution

open access: yesInternational Journal of Distributed Sensor Networks, 2021
Aiming at the problems of complex factors affecting the rate of deception probability of networked of radar nets, the large amount of calculation by Monte Carlo simulation and the inability to quantitatively analyze the influence of various factors on ...
Yue Yuan   +3 more
doaj   +1 more source

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