Hi everyone,
I tested an SEM model with 2 IV, 4 mediators and 1 DV on a sample of 1000 participants (see attached figure). Could you please help me to find an estimation for a good sample size using power analysis for this multiple-mediator model.
Best,
Robin
Robin, you are one of the best statistical universities in the world. Contact someone in that department for help. I wish you all the best, David Booth
Hi,
since the data has been collected and you estimated the model, why now consider power?
Dziak, J. J., Dierker, L. C., & Abar, B. (2018). The interpretation of statistical power after the data have been gathered. Current Psychology, 1-8. doi:10.1007/s12144-018-0018-1
Best,
--Holger
@Robin I would agree with @Holger that since the data have already been collected and analysed, why do you still want to go for analysis. Given the size of your data sample 1000 responses, which is quite large, and even low effect size would come out as significant.
Check out this link for a free mini course on power analysis/sample size planning in path analysis and structural equation modeling through simulations:
https://www.goquantfish.com/courses/sample-size-planning-in-mplus
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