Results 11 to 20 of about 910,710 (254)

Tests for Comparing Several Two-Parameter Exponential Distributions Based on Uncensored/Censored Samples

open access: yesJournal 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
doaj   +1 more source

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]

open access: yesTutorials 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
doaj   +1 more source

What outage attributes affect the frequencies of forced transformer outages in Eskom regions? Evidence from 2007–2016 data

open access: yesEnergy 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
doaj   +1 more source

On the Mistaken Use of the Chi-Square Test in Benford’s Law

open access: yesStats, 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
doaj   +1 more source

Biostatistics series module 4: Comparing groups - categorical variables

open access: yesIndian 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
doaj   +1 more source

Comparison of FAHP and FANP Decision-Making Methods in Determining the Appropriate Locations for Constructing an Underground Dam for Water Harvesting [PDF]

open access: yesWater 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
doaj   +1 more source

Chi-square test and its application in hypothesis testing

open access: yesJournal 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
doaj   +1 more source

Dichotomization of Multilevel Variables to Detect Hidden Associations

open access: yesApplied Sciences, 2022
A test of independence is commonly used to determine differences (or associations) between samples in a nominal level measurement. Fisher’s exact test and Chi-square test are two of the most widely applied tests of independence used in the data analyses ...
Asdrúbal López-Chau   +4 more
doaj   +1 more source

Making sense of statistics for family practitioner The "Chi-square test" - getting it right

open access: yesSouth African Family Practice, 2002
No abstract available.
Gboyego A. Ogunbanjo, David N. Durrheim
doaj   +1 more source

APPLICATION OF CHI SQUARE TEST IN MARKETING RESEARCH [PDF]

open access: yesAnnals of the University of Petrosani: Economics, 2017
The paper brings into focus the usefulness of chi square test in the field of marketing research. A chi square test represents a statistical tool based on the chi-square distribution of probability, which is easy to apply by a non-mathematician ...
CODRUȚA DURA, IMOLA DRIGĂ
doaj  

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