Statistics for Six Sigma Green Belts with Minitab and JMP

The Five-Number Summary

The five-number summary provides another way to determine the shape of the distribution.

A five-number summary consists of the following:

Smallest value

Q1

Median

Q3

largest value

Table 4.2 explains how the relationship among the “five numbers” allows you to recognize the shape of a data set.

Table 4.2. Relationships Among the Five Number Summary and the Type of Distribution

		Type of Distribution
	Symmetric	Right-Skewed	Left-Skewed
Distance from the smallest value to the median versus the distance from the median to the largest value.	Both distances are the same.	The distance from the smallest value to the median is less than the distance from the median to the largest value.	The distance from the smallest value to the median is ...