#### Answer

A double-bar graph uses one set of bars for each set of data.
A double-bar graph provides great information when comparing two sets of data because one can easily see which value/s are greater or smaller between two sets of data.
A sample graph is presented below. Refer to the table in the step-by-step part for the raw data.

#### Work Step by Step

A double-bar graph uses one set of bars for each set of data.
A double-bar graph provides great information when comparing two sets of data because one can easily see which value/s are greater or smaller between two sets of data.
Suppose the the table below whose the enrollment in ABC High School from 2012 to 2015. Creating a double-bar graph requires the use of two different sets of bars.
IN the graph above, the data for males are represented by the blue bars while the data for females are represented by the red bars.