Chi Square Difference test!

Frequently asked questions about PLS path modeling.
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Chi Square Difference test!

Post by AKaltenberg »


Can anybody tell me how to run a chi square difference test in SmartPLS?

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Post by ghozali »

As long as I knew, PLS did not have Chi-square test because it use different methodology compared to covarince based SEM (Amos or Lisrel). PLS based on variance based. What PLS do is just to find the best relationship between variable based on regression (t statistics) and do not justified whether there is casual relationship between variables (soft modeling)
Faculty of Economics, Diponegoro University
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Post by Diogenes »


in covariance based SEM the main purpose is to minimize the discrepancy function "F" (difference between observed and reproduzed covariance matrix).

In CB-SEM we have ==> Chi-square = (N-1)*F

Others fit indexes are based in chi-square too.
These fit indexes are assessment of how well the model reproduces the observed covariance matrix.

PLS is "partial", then this fit indexes aren´t useful.
Prof. Dr. Diogenes de Souza Bido
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