Weird df coming out from CFA tests PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
 Tony Reed posted on Monday, March 28, 2011 - 12:58 am
Dear Drs. Muthen,

I just finished running my model. And I am confused about the results of degree of freedom coming out of the test. Will appreciate if you can help me figure this out.

I have a sample size of 612 (# of observations 610). In my measurement model, I have 43 dependent variables and 10 continuous latent variables. The results are as below:

chi-square: 2265.31
df: 722
CFI: .918
TLI: .907
RMSEA: .051
SRMR: .048

All the item loadings are good. Nothing unexpected.

My question is, why did I end up with a df of 722, which is even higher than the # of observations. Is it normal? I know there is a formula calculating the max # of df, which is t=1/2 *N*(N+1)(N= the number of dependent variables). In this case, t=946. So, right now the df=722 <t=946.> .9 would be acceptable though above .95 is ideal).

Quite confused....

Also, is there any cut off value for X2/df ? Is it 3?

 Linda K. Muthen posted on Monday, March 28, 2011 - 12:25 pm
Please send the output and your license number to It is not possible to answer your question with the information that you give.
 Tony Reed posted on Tuesday, March 29, 2011 - 1:04 pm
Will do!! Thanks, Dr. Muthen!!
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