Max Rady College of Medicine

Term: Non-Normed Fit Index (NNFI)

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Glossary Definition

Last Updated: 2012-10-16


Incremental measure of goodness of fit for a statistical model, which takes into account the size of the correlations in the data and the number of parameters in the model. This index provides an adjustment to the Normative Fit Index that incorporates the degrees of freedom in the model (Ullman JB, 1996).

Related terms 


  • Ullman JB. "Structural equation modeling." In: Tabachnick BG, Fidell LS (ed). Using Multivariate Statistics. 5th ed. Boston, MA: Pearson Education Inc. 1996. 676-780.(View)

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