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I am doing research in Psychology. The research question is "There is a relationship between sleep quality and academic performance". My two variables are sleep quality and academic performance. I know what test to perform here.

I also want to test how these two variables vary with gender, student status (being a student), and economic status. Which statistical test should be used to analyze this?

I just need to know the name of the test, not looking for any instructions on how to test it (i.e., whether it is Anova, Anacova, or anything else). I am sure anyone who had done similar research knows what test to use.

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  • $\begingroup$ Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. $\endgroup$
    – Community Bot
    Commented Jan 10, 2023 at 11:03
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    $\begingroup$ I suggest you first draw your Directed acyclic graph (DAG): en.wikipedia.org/wiki/Directed_acyclic_graph I know its not common to do so, but it will be worth it. You can use the following website for drawing DAGs: dagitty.net/dags.html $\endgroup$
    – The_old_man
    Commented Jan 10, 2023 at 12:44
  • $\begingroup$ @The_old_man I edited my question, does it make more sense now? Thank you for your answer. $\endgroup$
    – Epoxy
    Commented Jan 10, 2023 at 13:32
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    $\begingroup$ Depends on your outcomes and how you have measured them. If they are continuous, you can go for a multivariate linear regression (check the assumptions). Check this answer for differences between ANOVA, ANCOVA and regression: stats.stackexchange.com/questions/14246/…. $\endgroup$
    – The_old_man
    Commented Jan 10, 2023 at 13:47

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