Greek Small Letter Sigma

σ
Symbol Format Data
σ Code Point
U+03C3
TeX
\sigma
SVG
All symbols

Usage

The Greek letter (sigma) is used in statistics to represent the standard of a population. It also has various uses in other areas of math and science.

Related

capital sigma

The capital Greek letter Σ (Sigma) is visually very similar to the summation symbol (∑) which is the dedicated symbol in math for the summation operation.