General · Univariate · manipulative

Compare groups with box plots

Drag whiskers, quartiles, and the median on either plot — or scrub the sliders. Toggle outliers above and below each group.

box (Q1–Q3) median whiskers outlier

Drag any handle · fences = Q1 − 1.5×IQR and Q3 + 1.5×IQR

Scenario

Adjust groups

Working

GroupMedianIQROutliers

Read parallel box plots by comparing medians (centre shift) and IQR (spread of the middle half). Outliers are not whisker ends — they are individual points beyond the 1.5×IQR fences.