General plots / Beeswarm plot
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Each point is one observation; points are spread sideways so they do not overlap, so the width of a group shows where values are concentrated.
The horizontal line is the median. Beeswarm plots suit groups of tens to a few hundred points, showing both the distribution and each sample.
Group comparisons (Mann–Whitney / Kruskal–Wallis + Dunn, or Welch t / ANOVA + Tukey) are listed in the table below rather than drawn.
With thousands of points per group the points shrink and may still overlap; use a violin plot instead.
Boxes span the quartiles (Q1–Q3, R type 7) and whiskers reach the furthest value within 1.5 × IQR; densities use a Gaussian kernel (Silverman bandwidth). Tests: Welch t test, Mann–Whitney U (as scipy), one-way ANOVA with Tukey HSD, Kruskal–Wallis with Dunn’s test (Dunn 1964, Technometrics 6:241–252); multiple comparisons are adjusted by Benjamini–Hochberg.
Up to 40 groups; at most 10 comparison brackets are drawn (smallest P first); all comparisons are in the downloadable table.
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