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distribution family

violin

Box-plot with a density curve overlaid — shape of the distribution made visible.

The width at any point shows the density of observations. Often used in research papers where the shape of the distribution (multimodal, skewed) is itself the finding.

When to use

Comparing distributions where shape (modality, skew) matters.

When NOT to use

Audience is non-technical (use histogram or box-plot).

Rhetorical roles

  • distribute
  • compare

Variants & related

Required primitives

  • has_axis_titles

Optional primitives

  • has_legend

Common anti-patterns

  • unfamiliar-encoding

Disambiguation rules

  • Symmetrical density shapes flanking a central box.
  • If only the density curves and no box, see ridgeline.