Evaluation of Supply Chain Performance by Liliana Avelar-Sosa Jorge Luis García-Alcaraz & Aidé Aracely Maldonado-Macías

Author:Liliana Avelar-Sosa, Jorge Luis García-Alcaraz & Aidé Aracely Maldonado-Macías
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

9.11.1 Cronbach’s Alpha—Internal Consistency

The Cronbach’s alpha (α) is very frequently used to measure the internal consistency of a latent variable. It can be estimated based on either the variance or the correlation indices between the observed variables (Cronbach 1951). To obtain a reliable Cronbach’s alpha value, every latent variable must have at least two observed variables; otherwise, the software program cannot estimate a real value (Adamson and Prion 2013). The simple way for estimating the Cronbach’s alpha is to take into account the correlation index. A rule of thumb for interpreting the Cronbach’s alpha for Likert scale questions is as follows (Rindskopf 2015):α > 0.9 excellent

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