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Box Plot (Statistical Box & Whisker)

Statistical box and whisker plot displaying five-number summaries (min, Q1, median, Q3, max) alongside outlier anomalies.

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#box-plot#whisker#statistical#iqr#distribution#outliers
Customization Guides & Code Snippets

◆Calculating Scaled Y Coordinates for Quartiles & Whiskers

Map numerical latency milliseconds into SVG viewbox units using a linear scaling function: svgHeight - (val / maxScale) * (svgHeight - padding).

const scaleY = (val: number) => svgHeight - (val / maxScale) * (svgHeight - 40) - 20;

◆Drawing Interquartile Ranges (IQR) and Median Dividers

Render a rounded rect from yQ3 to yQ1 with fillOpacity={0.3}, topped by a crisp 2.5px white horizontal line at yMed.

When to use a Box Plot (Statistical Box & Whisker)

A Box Plot (Statistical Box & Whisker) is ideal for developers and designers who need to display data clearly and effectively. Use this chart type when:

  • ✓Building analytics overview pages with multiple metrics
  • ✓SaaS product dashboards showing user activity
  • ✓Business intelligence reporting screens
  • ✓Admin panels with KPI summaries
Tips for Recharts Box Plot (Statistical Box & Whisker)
TIP 1Use a grid layout with consistent card sizes for visual rhythm
TIP 2Always show a time period selector (Today / 7d / 30d / 90d)
TIP 3Load charts progressively — KPI cards first, then charts
TIP 4Use skeleton loaders while data is fetching to prevent layout shift
TIP 5Keep color usage minimal — pick 2-3 accent colors maximum
Key Recharts Props
PROPTYPEDESCRIPTION
dataarrayArray of objects with your data values
dataKeystringThe key in your data objects to use for bar height
fillstringBar color — accepts hex, rgb, or CSS variable
radius[number,number,number,number]Corner radius [topLeft, topRight, bottomRight, bottomLeft]
stackIdstringGroup bars with the same stackId into a stacked bar
Frequently Asked Questions

What is a box plot (box and whisker plot) and what does it show?

A box plot (or box and whisker plot) visually summarizes a data distribution using five key numbers: minimum, first quartile (Q1, 25%), median (Q2, 50%), third quartile (Q3, 75%), and maximum, alongside outlier points beyond 1.5x the interquartile range (IQR).

How do you make a box plot in React (recharts box plot)?

Because Recharts does not feature a single native <BoxPlot> tag, developers render custom SVG elements or use a ComposedChart with Bar and ErrorBar components to draw the IQR boxes, median lines, and whisker caps.

Why use a box plot over a standard bar chart with averages?

A standard bar chart showing only the mean (average) hides data skew and extreme outliers. A box plot reveals whether your metric (such as server latency or user session duration) has long-tail skewness or high variability.

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