Sigma Symbol

The Greek letter sigma (σ) is used in statistics to represent the standard deviation of a population of values.

Format Display Data
Image Sigma Symbol (σ) Download SVG ↓
TeX 
\sigma
Unicode σ 
963

Usage

Standard Deviation
Standard Deviation | Formula

The sample standard deviation formula is denoted by the greek lower case sigma symbol in the case of the population and the latin letter s for the sample.