Chapter 14

Two-Way Between-Groups ANOVA

df_rows = N_rows − 1

df_columns = N_columns − 1

df_interaction = (df_rows)(df_columns)

SS_total = Σ(X − GM)² for each score

SS_{between(rows)} = Σ(M_row − GM)² for each score

SS_{between(columns)} = Σ(M_column − GM)² for each score

SS_within = Σ(X − M_cell)² for each score

SS_{between(interaction)} = SS_total − (SS_{between(rows)} + SS_{between(columns)} + SS_within)

Effect Sizes for a Two-Way Between-Groups ANOVA

Pearson Correlation Coefficient

df_r = N − 2