Chi Square Difference test!

AKaltenberg · Post by **AKaltenberg** » Wed Jun 28, 2006 9:34 am

Hi,

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

Thanks
Andrea

ghozali · Post by **ghozali** » Thu Jun 29, 2006 1:13 am

Hi,
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)

Diogenes · Post by **Diogenes** » Mon Jul 03, 2006 1:24 pm

Hi,

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.