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Les distributions multinomiales, leur mesure par les tests khi2 et G, leur approximation par la loi khi-carré et l'analyse des tableaux de fréquences par le test $G$ [PDF]
Tutorials in Quantitative Methods for Psychology, 2022 La variable multinomiale, une extension de la binomiale, s'exprime par un vecteur de fréquences associées à des catégories d'observations indépendantes, la probabilité d'une observation dans chaque catégorie étant à son tour représentée par un vecteur ...
Laurencelle, Louis
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Journal of Statistical Theory and Applications (JSTA), 2020 The problems of comparing several exponential distributions based on type II censored samples are considered. Likelihood ratio tests (LRTs) for comparing several location parameters, comparing several scale parameters and for homogeneity of distributions
K. Krishnamoorthy +2 more
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Energy Reports, 2020 In this paper, the authors present a novel approach to the study of the frequency of forced outages in various operating units, or regions of Eskom, using statistical techniques.
Nhlanhla Mbuli +3 more
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On the Mistaken Use of the Chi-Square Test in Benford’s Law
Stats, 2021 Benford’s Law predicts that the first significant digit on the leftmost side of numbers in real-life data is distributed between all possible 1 to 9 digits approximately as in LOG(1 + 1/digit), so that low digits occur much more frequently than high ...
Alex Ely Kossovsky
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An accurate test for homogeneity of odds ratios based on Cochran's Q-statistic [PDF]
, 2015 Background: A frequently used statistic for testing homogeneity in a meta-analysis of K independent studies is Cochran's Q. For a standard test of homogeneity the Q statistic is referred to a chi-square distribution with K - 1 degrees of freedom. For the
AF Schmidt +28 more
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Chi-square test and its application in hypothesis testing
Journal of the Practice of Cardiovascular Sciences, 2015 In medical research, there are studies which often collect data on categorical variables that can be summarized as a series of counts. These counts are commonly arranged in a tabular format known as a contingency table.
Rakesh Rana, Richa Singhal
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Comparison of FAHP and FANP Decision-Making Methods in Determining the Appropriate Locations for Constructing an Underground Dam for Water Harvesting [PDF]
Water Harvesting Research, 2018 The recent droughts in Iran made a decline in groundwater table and the migration of villagers to cities was hindered supplying drinking water for the current population. Therefore it should be considered as an important issue.
Saeed Tavakoli +3 more
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Biostatistics series module 4: Comparing groups - categorical variables
Indian Journal of Dermatology, 2016 Categorical variables are commonly represented as counts or frequencies. For analysis, such data are conveniently arranged in contingency tables. Conventionally, such tables are designated as r × c tables, with r denoting number of rows and c denoting ...
Avijit Hazra, Nithya Gogtay
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Monotonicity of chi-square test statistics [PDF]
, 2003 This paper establishes monotonicity of the chi-square test statistic. As the more efficient parameter estimator is plugged into the test statistic, the degrees of freedom of the resulting chi-square test statistic monotonically ...
Ryu, Keunkwan
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Maximally selected chi-square statistics for at least ordinal scaled variables [PDF]
, 2005 The association between a binary variable Y and a variable X with an at least ordinal measurement scale might be examined by selecting a cutpoint in the range of X and then performing an association test for the obtained 2x2 contingency table using the ...
Boulesteix, Anne-Laure
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