A bar graph compares amounts across categories using bars whose heights show the values. The bars are separated, unlike a histogram, because the categories are distinct rather than continuous.
Math Dictionary / Bar Graph
Bar Graph
A bar graph uses bars to compare amounts in different categories.
StatisticsGrade 3Grade 4Grade 5Grade 6GED
What it means
The taller or longer the bar, the larger the value it represents.
Also called: bar chart
Examples
| A bar can show 12 students chose soccer |
| Bars can be vertical or horizontal |
| A scale of 2 means each tick adds 2 |
Common mistake
Always read the scale. A bar that reaches 6 may mean 6, 12, or 60 depending on the graph.
Try one
Question: What should you check before comparing bar heights?
Show answer
Check the scale and labels.