On the mathematical behavior of Cronbach’s α coefficient

Jiro Suzuki

doi:10.32188/iar.2.0_30

Proceedings of the International Conference on ICT Application Research

DOI https://doi.org/10.32188/iar.2.0_30

Conference information

Host: International ICT Application Research Society

Name : The 2nd International Conference on ICT Application Research

Date : August 31, 2024 - September 03, 2024

On the mathematical behavior of Cronbach’s α coefficient

*Jiro Suzuki

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Keywords: internal consistency, Cronbach’s α, reliability for a test

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Pages 30-32

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Abstract

Cronbach’s α coefficient is used for practical purposes to evaluate its value of 0 to 1. However, according to the definition formula, this value can also be negative. This article discusses how this situation can be used to improve test items, based on the mathematical properties of the formula.

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