Flow Chart for Interpreting ANOVA’s with Interaction Terms
Mention that the interaction was NS
and discuss the main effects.
Determine why the
interaction was significant.
Significant due to a
“true” interaction.
Significant due to
differences in magnitude.
State that the interaction
is significant due to
differences in magnitude
and discuss the main
effects. Discussion of the
interaction should be
avoided.
Discuss the interaction.
Discussion of the main
effects should be avoided.
Non-significant interaction Significant interaction