# Definition:Graph (Statistics)

*This page is about Graph in the context of Statistics. For other uses, see Graph.*

## Definition

In the context of statistics, a **graph** is a word that loosely means a pictorial or diagrammatic presentation of a set of data.

### Bar Graph

A **bar graph** is a form of graph which consists of a finite set of (usually) vertical bars whose length determines the statistic being communicated.

### Pie Chart

A **pie graph** is a form of graph which consists of a circle divided into sectors whose areas represent the proportion of the corresponding statistic relative to the whole.

### Pictograph

A **pictograph** is a variant of a bar graph whose bars consist of a number of icons or other pictorial symbols arranged in a (usually) line.

## Also known as

A **graph** is often seen referred to as a **chart**, particularly with reference to specific kinds of **graph**.

Some sources use **diagram**, but that word has wider connotations.

## Sources

- 1972: Murray R. Spiegel and R.W. Boxer:
*Theory and Problems of Statistics*(SI ed.) ... (previous) ... (next): Chapter $1$: Graphs