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Hello! I have a basic stats question: I want to model a phenomenon, and estimate parameters. How many observations would I need, to be as accurate as possible? I think it might have something to do with the degrees of freedom, but I am not exactly sure how to use this information. From the...

Hi, I have a study with 318 Ss, and I have a 3 (priming condition) x 2 (target: self vs. other) MANCOVA with gender, age, being married, and having children as covariates. How do I calculate df_between and df_within? Thanks so much!