Results 21 to 30 of about 1,902,105 (303)

Inequalities for noncentral chi-square distributions [PDF]

open access: yes, 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.
core   +2 more sources

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

Maximally selected chi-square statistics and umbrella orderings [PDF]

open access: yes, 2006
Binary outcomes that depend on an ordinal predictor in a non-monotonic way are common in medical data analysis. Such patterns can be addressed in terms of cutpoints: for example, one looks for two cutpoints that define an interval in the range of the ...
Boulesteix, Anne-Laure, Strobl, Carolin
core   +3 more sources

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

Monotonicity of Chi-square Test Statistics [PDF]

open access: yes, 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 increase.
Keunkwan Ryu
core   +1 more source

Analysis of Tiling Patterns of "Tekyeh Moavan-ol-Molk" in Kermanshah by Statistical Nonparametric Test Method (Chi-square) [PDF]

open access: yesنگره, 2023
One of the architectural features of the "Qajar" period in Iran in terms of works of art is their synchronization with religious, literary and mythological themes. Kermanshah’s "Tekyeh Moavan-ol-Molk" building is one of the most significant architectural
Mohammadmahdi Moghadasi
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  

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   +1 more source

Evaluating Sustainable Education Using Eco-Literacy

open access: yesHabitat, 2020
Environmental issues are important to be solved because it would threaten both of the current and future life. It can be done through implementing sustainable education as a process of humanization that produced changes in knowledge-understanding ...
Rachman Hartono
doaj   +1 more source

Comparative study of psychoactive substance use pattern in romania and hungary

open access: yesEuropean Psychiatry, 2021
Introduction Europe’s drug situation is facing an increasing trend. Objectives To compare the psychoactive substance use pattern in Romania and Hungary. Methods Data was collected from the electronical databases of the 3rd Psychiatry Clinic of Cluj
C.R. Costescu   +3 more
doaj   +1 more source

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