Statistics › Section B · Descriptive statistics › Topic B.4

Box plots

Five numbers, drawn to scale, can show a whole distribution's centre, spread, skew and outliers in one compact picture - and line several groups up for comparison at a glance.

In this topic

  • The five-number summary, drawn
  • The five-number summary
  • Drawing a box plot
  • Reading a box plot
  • Worked example: one data set, one box plot
  • Worked example: comparing two classes
  • Odd shapes are honest
  • What the box plot hides
  • Common mistakes to avoid
  • Key takeaways

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