Editing Bar chart (section)

{{short description|Type of chart}}
{{Redirect|Bargraph|electronic bargraph displays|LM3914}}
[[File:Human losses of world war two by country.png|thumb|upright=1.4|Example of a grouped (clustered) bar chart, one with horizontal bars.]]
A '''bar chart''' or '''bar graph''' is a chart or graph that presents [[categorical variable|categorical data]] with rectangular bars with [[height]]s or [[length]]s proportional to the values that they represent. The bars can be plotted vertically or horizontally.  A vertical bar chart is sometimes called a '''column chart''' and has been identified as the prototype of charts.<ref>{{Cite journal |title=Typicality effect in data graphs | year=2022 | last1=Reimann |first1=D. |last2=Struwe |first2=M. | last3=Ram | first3=N. | last4=Gaschler | first4=R.| journal=Visual Communication | volume=24 | pages=114–128 | doi=10.1177/14703572221130445| doi-access=free }}</ref>

A bar graph shows comparisons among [[discrete variable|discrete]] [[categorical variable|categories]]. One axis of the chart shows the specific categories being compared, and the other axis represents a measured value. Some bar graphs present bars clustered or stacked in groups of more than one, showing the values of more than one measured variable.