Multiple Bar Graph

As the name suggests, a multiple bar graph is the same as a bar graph but has multiple bars to depict relationships between different data values. One can include as many parameters as possible. However, each parameter must have the same unit of measurement.

Each bar or column in the multiple bar graph represents a data value. These graph...

Suppose one wants to compare the number of male and female students enrolled in different courses—Statistics, Biology, Physics, and Chemistry. Such comparison of data sets with different categories is visualized using a multiple bar graph. 

Here, the graph contains two groups of bars separated by a gap to indicate two sets of data.