For an analysis of variance comparing three treatment means with a separate sample of n = 10 participants in each treatment,dfₜₒₜₐₗ = 29.

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The total degrees of freedom for an analysis of variance with three treatment means and n=10 participants in each treatment would be df_total = 3n-1 = 29. Therefore, df_error (or df_within) would be df_total - df_between = 29 - 2 = 27.

For an Analysis of Variance Comparing Three Treatment Means with a Separate