Bar Chart

The term bar chart refers to a category of diagrams in which values are represented by the height or length of bars, lines, or other symbolic representations. Bar charts are typically used to display variables on a nominal or ordinal scale. Bar charts are a very popular form of information graphics often used in research articles, scientific reports, textbooks, and popular media to visually display relationships and trends in data. However, for this display to be effective, the data must be presented accurately, and the reader must be able to analyze the presentation effectively. This entry provides information on the history of the bar charts, the types of bar charts, and the construction of a bar chart.