Search results for " X2 statistic."

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Continuity correction of pearson’s chi-square test in 2x2 contingency tables: A mini-review on recent development

2022

The Pearson’s chi-square test represents a nonparametric test more used in Biomedicine and Social Sciences, but it introduces an error for 2 x 2 contingency tables, when a discrete probability distribution is approximated with a continuous distribution. The first author to introduce the continuity correction of Pearson’s chi-square test has been Yates F. (1934). Unfortunately, Yates’s correction may tend to overcorrect of p-value, this can implicate an overly conservative result. Therefore many authors have introduced variants Pearson’s chi-square statistic, as alternative continuity correction to Yates’s correction. The goal of this paper is to describe the most recent continuity correctio…

Contingency tablelcsh:R5-920statisticlcsh:Public aspects of medicine2x2 contingency tableNonparametric statistics2Continuity correctionlcsh:RA1-1270Pearson’s xSettore MED/42 - Igiene Generale E ApplicataYates’s continuity correctionMini reviewTest (assessment)Settore MED/01 - Statistica Medica2x2 contingency table Pearson’s xSerra’s continuity correctionContinuity correctionStatisticsChi-square testProbability distributionlcsh:Medicine (General)Pearson’s x2 statisticStatisticMathematics
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AN ASSOCIATION INDEX FOR RECTANGULAR CONTINGENCY TABLES WITH ORDERED/UNORDERED VARIABLES

2016

In a previous work, Mineo and Ruggieri (2005) introduce a new index to measure the association in square contingency tables; in this paper such an index is extended to rectangular tables, preserving the same properties. The considered domain includes all the contingency tables with equal n (the total number of observations), since the tables of maximum dependence, useful for computing the denominator of the proposed index, belong to it. The main findings, which prove the effectiveness of the proposed measure, are presented. In particular, the new measure assumes values in the range [-1,+1], taking value zero in tables with distributive independence and positive/negative values if associatio…

contingency association concordance discordance X2 statistic.Settore SECS-S/01 - Statistica
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