Pie chart
Pie chart
A Pie chart (pronounced: /paɪ tʃɑːrt/) is a type of graph that displays data in a circular format, with slices representing proportions of the whole.
Etymology
The term "Pie chart" is derived from the simple fact that a pie chart looks like a pie that has been sliced. The term was first used in the early 19th century by William Playfair, a Scottish engineer and political economist.
Definition
A pie chart is a circular statistical graphic divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice, or its angle, is proportional to the quantity it represents.
Usage
Pie charts are widely used in the field of statistics, business, and education to visualize the percentage or proportional data or to display the distribution of data among different categories.
Related terms
- Bar chart: A type of chart that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent.
- Line graph: A type of chart which displays information as a series of data points called 'markers' connected by straight line segments.
- Histogram: An accurate representation of the distribution of numerical data.
- Data visualization: The representation of data or information in a graph, chart, or other visual format.
See also
External links
- Medical encyclopedia article on Pie chart
- Wikipedia's article - Pie chart
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