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graph, figure that shows relationships between quantities. The graph of a function *y*=*f* (*x*) is the set of points with coordinates [*x, f* (*x*)] in the *xy*-plane, when *x* and *y* are numbers. A similar definition can be given for functions involving more general kinds of variables. In mathematics interest is almost exclusively in line graphs and what these reveal about the functions they represent. Statistics makes extensive use of both line graphs and bar graphs, in which the lengths of the various bars show the quantities to be compared. Graph is also a mathematical term used in combinatorics to designate a geometric object consisting of vertices and edges (joining pairs of vertices). Such objects have been studied considerably in recent years because of the applicability to such diverse fields as computer networks, game theory, and social psychology.

The Columbia Electronic Encyclopedia Copyright © 2004.

Licensed from Columbia University Press

Licensed from Columbia University Press

Graph may refer to:### See also

- A graphic (such as a chart or diagram) depicting the relationship between two or more variables used, for instance, in visualising scientific data.

In mathematics:

- Graph (mathematics), a set of vertices connected with edges
- Graph theory
- Graph of a function f : X → Y:

In computer science:

- Graph (data structure), an abstract data type representing relationships or connections
- Graph (software), the name of a software application for mathematical plotting

Other uses:

- HMS Graph (P715), a submarine of the Royal Navy (United Kingdom)

- Grapheme (linguistics)
- -graphy (suffix)
- Graf
- Graff
- List of graphing software

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Last updated on Wednesday October 08, 2008 at 14:07:32 PDT (GMT -0700)

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This article is licensed under the GNU Free Documentation License.

Last updated on Wednesday October 08, 2008 at 14:07:32 PDT (GMT -0700)

View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation

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