Found this nice way to visually summarize contingency tables using ggplot2 in R on Hadley Wickham’s ggplot2 cheat sheet. Using the same data in my previous post on making scatterplots in small multiples, I’ll demonstrate how to use ggfluctuation() to make a fluctuation plot. For a two-dimensional table, this simply puts different dimensions on the x and y axes, and the area of the rectangles is

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