What is five number summary - Definition and Meaning

Five Number Summary :

The distribution of the ordered observation is divided into five summaries. That is, minimum, first quartile, median, thrid quartile, and maximum.

Formula :

Minimum = first element of set, First Quartile = (n+1)/4, Median = (n+1)/2, Third Quartile = 3(n+1)/4 and Maximum =last element of set.

Example :

A = {1,2,3,4,5}. Here, Minimum = 1, First Quartile = 1.5, Median = 3, Third Quartile = 4.5, and Maximum = 5.
First Quartile Focus

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