- The definition of a bar graph is a chart that uses the lengths of parallel bars to represent the relationship between various data or values.
A diagram that has rectangles of various lengths that correspond to numbers is an example of a bar graph.

A bar chart or bar graph.

## bar graph

a graph in which the lengths of parallel bars are used to compare statistical frequencies, quantities, etc.

## bar graph

noun

A graph consisting of parallel, usually vertical bars or rectangles with lengths proportional to the frequency with which specified quantities occur in a set of data. Also called

*bar chart*.**bar graph**

the average annual rainfall of several US cities