Concept / Pie chart

Pie chart

A chart showing parts of a whole with circular sectors

A chart showing parts of a whole with circular sectors.

A phrase to start with

Divides a circle into sectors to show proportions.

Appearance and effects

Shows relationships of parts to a whole with colored sectors.

Visual traits

  • circle
  • sectors
  • color coding

Expected changes

  • Circular sections are more likely to appear
  • Sections are more likely to be color-separated

Five examples

1 — Medium-sized dog
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2 — Cat
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3 — Teenage boy
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4 — Unoccupied interior
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5 — Valley with a river and mountain ranges
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Meaning and scope

Definition

A chart showing parts of a whole with circular sectors. It does not guarantee percentage accuracy or complete totals.

In more detail

It divides a circle into colored sectors to show relationships of parts to a whole. Values and categories remain separate choices.

Includes

  • Charts showing proportions with sectors

Excludes

  • Accurate statistics
  • Complete totals
  • Analytical conclusions

What this does not imply

  • Accurate proportions
  • Complete totals
  • Analytical conclusions

Variability

Because the source is a weakly direct general reference, ratio and text legibility may vary.

Usage and adjustments

Usage

  • Show parts and whole with sectors
  • Specify values separately

Distinguish similar expressions

  • Verify numerical accuracy separately

Typical uses

  • Show proportions of a whole
  • Compare a small number of categories

Possible failure modes

  • Sector sizes do not match values
  • Color coding cannot be distinguished

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