I dont think ttest will work for non-parametric.
About Wilcoxon -it dont know it will consider weights of the data into account.
I dont know what test to use for data like NIS, NHANES, etc.
Actually, I want to compare means of 2 continuous variables(non-parametric) across 2 groups in a complex survey data. I don't know which test to use.
You should post this in the Statistical Forum.
Thanks Reeza. I will try to do that!
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