Sigma Symbol (σ)

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

Symbol Format Data
σ Unicode


Standard Deviation

The 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.

Greek Alphabet

The Greek Alphabet is used throughout math to represent variables, constants, and coeffecients within math expressions, formulas, and equations.

Related Symbols

capital sigma

The capital Greek letter Σ (Sigma) is used in algebra to represent the summation operator.