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Boxplot
Modified Boxplot

A data display that shows the five-number summary. The whiskers, stretching outward from the first quartile and third quartile as shown below, are no longer than 1.5 times the interquartile range (IQR). Outliers beyond that are marked separately.

Note: Beginners are sometimes taught to draw box-and-whisker plots, which do not show outliers. Modified boxplot is a name sometimes used for boxplots to distinguish them from box-and-whisker plots.

 

 

See also

Median, stemplot

 


  this page updated 21-feb-16
Mathwords: Terms and Formulas from Algebra I to Calculus
written, illustrated, and webmastered by Bruce Simmons
NCTM Web Bytes December 2004 Web Bytes March 2005 Web Bytes