Five Number Summary

Pronunciation: /faɪv ˈnʌm bər ˈsʌm ə ri/ ?

A five number summary is a summary of a statistical dataset. The five number summary consists of the median, the first quartile (Q1), the third quartile (Q3), the minimum value, and the maximum value of the dataset. The five number summary of the dataset 2, 4, 5, 6, 6, 8, 9 is:

  • Minimum: 2
  • Q1: 4
  • Median: 6
  • Q3: 8
  • Maximum 9


  1. David C. Hoaglin, Frederick Mosteller, and John W. Tukey. Understanding Robust and Exploratory Data Analysis, pp 33-57. Wiley-Interscience, January 15, 2000.
  2. Dr Daniel B Wright and Kamala London . First (and Second) Steps in Statistics, 2nd ed., pp 11-19. Sage Publications Ltd, April 1, 2009.

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Five Number Summary. 2010-02-04. All Math Words Encyclopedia. Life is a Story Problem LLC.


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2010-02-04: Added "References" (McAdams, David.)
2009-01-12: Initial version (McAdams, David.)

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