Linda Bode posted on Friday, July 30, 2010 - 10:20 am
Hi! For my Master thesis I have to test my data for measurememt invariance since I am comparing four countries with about 50 respondents each. Unfortunately, I never learned another program than SPSS and therefore I am trying to figure out how MPLUS works by myself. I read the User guide and the handouts, but I am still not sure how to do it. I wanted to start with a simple CFA for each country, but the program shows me the following Error warning:
One or more variables have a variance of zero. check your data and format statement.
I dont have any missing values in my data set, I checked it twice with SPSS.
This is my syntax in short (I have five more factors):
I know of no rule of thumb for sample size. It depends on the model and the quality of the variables. You would need to do a Monte Carlo simulation study to understand the sample size needed for your particular study.