Overview for Interaction Plot

Use Interaction Plot to show how the relationship between one categorical factor and a continuous response depends on the value of the second categorical factor. This plot displays means for the levels of one factor on the x-axis and a separate line for each level of another factor.

For example, researchers at a motor vehicle bureau want to present the results of a two-way ANOVA to their colleagues. The two-way ANOVA results indicate a significant interaction effect between driver experience and road type on the number of steering corrections.

Where to find this analysis

  • Mac: Statistics > ANOVA > Interaction Plot
  • PC: STATISTICS > Exploratory Plots > Interaction Plot

When to use an alternate plot

This plot displays data means. After you perform a two-way ANOVA, you can use Factorial Plots to create main effects plots and interaction plots that have fitted means instead of data means.

For more information, go to Comparison of data means and fitted Means.

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