Statistics and Probability Dictionary

Select a term from the dropdown text box. The online statistics glossary will display a definition, plus links to other related web pages.

Select term:       

Bar Chart

A bar chart is made up of columns or rows plotted on a graph. Here is how to read a bar chart made up of columns.

  • The columns are positioned over a label that represents a categorical variable .
  • The height of the column indicates the size of the group defined by the column label.

And here is how to read bar chart made up of rows.

  • The rows extend from labels that represent a categorical variable.
  • The length of the row indicates the size of the group defined by the row label.

The bar chart below is in "column" format. It shows average per capita income for the four "New" states - New Jersey, New York, New Hampshire, and New Mexico.

Per
Capita
Income
 
$36,000
$24,000
$12,000
 
 
 
 
  New
Jersey
New
Hampshire
New
York
New
Mexico

See also:   AP Statistics Tutorial: Bar Charts and Histograms | AP Statistics Tutorial: Comparing Distributions