Five-number summary

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In descriptive statistics, the five-number summary of a data set consists of:

  1. the minimum (smallest observation)
  2. the lower quartile or first quartile (which cuts off the lowest 25% of the data)
  3. the median (middle value)
  4. the upper quartile or third quartile (which cuts off the highest 25% of the data)
  5. the maximum (largest observation)

See also: Quartile, Median, Order statistic, Box plot

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