Help Plotting 3-way interaction

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    I just used Andy’s book (DS using R) to run a MANOVA, and I have found two significant 3-way interactions. The DV is ordinal (five levels) and the three IVs are all categorical (2-3 levels each).

    Does anyone have a suggestion for how to plot these interactions? Multiple bar charts doesn’t seem to help explain these interactions. I’ve read some papers on plotting categorical data (e.g., mosaic plots), but they don’t seem to allow for ordinal data.


    Dave Collingridge

    I would question the approach of using manova to analyze ordinal data. MANOVA is usually reserved for continuous DVs (i.e., ratio and interval level data).  

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