A multiple bar graph is a graph that has multiple bars for each category.A multiple bar graph compares as many sets of data you want. The process for creating a multiple bar graph is just like creating any other bar graph, only you will have more colors to represent different sets of data.
To create a multiple bar graph:
1. Draw the horizontal (x) and vertical (y) axis.
2. Give the graph a title.
3. Label the horizontal x axis.
4. Label the vertical y axis.
5. Look at the range in data and decide how the units on the vertical axis (y) should be labeled.
For each item on the horizontal (x) axis, draw a vertical column to the appropriate value however many times as you have sets of data.