Lab 8 Box and Whisker Plot

Quartiles are quantiles (also percentiles) that divide the data into approximately four equal parts.

A box and whisker plot is a graph showing the data distribution using the five-number-summary: minimum value, first quartile, median (second quartile), third quartile, and maximum value. This type of graph is also known as a box plot.

The interquartile range (IQR) represents the spread of the middle half of the data and is calculated as the difference between the third and first quartiles.