Results 21 to 30 of about 1,188,608 (310)
Latent-variable Approaches Utilizing Both Item Scores and Response Times To Detect Test Fraud
Open Education Studies, 2021 There is a growing interest in approaches based on latent-variable models for detecting fraudulent behavior on educational tests. Wollack and Schoenig (2018) noted the presence of five types of statistical/psychometric approaches to detect the three ...
Sinharay Sandip
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Inequalities for noncentral chi-square distributions [PDF]
, 1990 An upper and lower bound are presented for the difference between the distribution functions of noncentral chi-square variables with the same degrees of freedom and different noncentralities.
Kallenberg, Wilbert C.M.
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Approximation of CDF of Non-Central Chi-Square Distribution by Mean-Value Theorems for Integrals
Mathematics, 2021 The cumulative distribution function of the non-central chi-square distribution χn′2(λ) of n degrees of freedom possesses an integral representation. Here we rewrite this integral in terms of a lower incomplete gamma function applying two of the second ...
Árpád Baricz +2 more
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Analysis and Allocation of Cancer-Related Genes Using Vague DNA Sequence Data
Frontiers in Genetics, 2022 To test the equality of several independent multinomial distributions, the chi-square test for count data is applied. The existing test can be applied when complete information about the data is available.
Muhammad Aslam, Mohammed Albassam
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A plan classifier based on Chi-square distribution tests [PDF]
, 2011 To make good decisions in a social context, humans often need to recognize the plan underlying the behavior of others, and make predictions based on this recognition.
Iglesias Martínez, José Antonio +3 more
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Multimodel Response Assessment for Monthly Rainfall Distribution in Some Selected Indian Cities Using Best Fit Probability as a Tool [PDF]
, 2018 We carry out a study of the statistical distribution of rainfall precipitation data for 20 cites in India. We have determined the best-fit probability distribution for these cities from the monthly precipitation data spanning 100 years of observations ...
Desai, Shantanu +2 more
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The cloud-in-cloud problem for non-Gaussian density fields [PDF]
, 2000 The cloud-in-cloud problem is studied in the context of the extension to non-Gaussian density fields of the Press-Schechter approach for the calculation of the mass function.
Ashman K. M. +25 more
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The γ-order generalized chi-square distribution
Research in StatisticsBased on the definition of the γ-order generalized normal, the γ-order generalized standard normal is obtained, and applications are referred. We proceed on the definition of the γ-order generalized chi-square, [Formula: see text] and the probability ...
Christos P. Kitsos, Ioannis S. Stamatiou
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Epidemiology, Biostatistics and Public Health, 2019 The Pearson’s chi-square test represents a nonparametric test more used in Biomedicine and Social Sciences, but it introduces an error for 2x2 contingency tables, when a discrete probability distribution is approximated with a continuous distribution ...
Nicola Serra +3 more
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Chebyshev–Edgeworth-Type Approximations for Statistics Based on Samples with Random Sizes
Mathematics, 2021 Second-order Chebyshev–Edgeworth expansions are derived for various statistics from samples with random sample sizes, where the asymptotic laws are scale mixtures of the standard normal or chi-square distributions with scale mixing gamma or inverse ...
Gerd Christoph, Vladimir V. Ulyanov
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