A significant main effect found in a two-way between-groups ANOVA trumps any significant interaction.

Question

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A significant interaction in a two-way ANOVA indicates that the effect of one independent variable on the dependent variable depends on the level of the other independent variable. This interaction effect is crucial to interpret before considering the main effects, as it suggests that the main effects cannot be interpreted in isolation without considering the interaction between the variables.

A Significant Main Effect Found in a Two-Way Between-Groups ANOVA