# Pearson's moment coefficient of skewness

## Description

In probability theory and statistics, skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. The skewness value can be positive or negative, or even undefined. The skewness of a random variable X is the third standardized moment.

Related formulas## Variables

γ | Skewness (dimensionless) |

μ_{3} | The third central moment ( about the random variable's mean) (dimensionless) |

σ | The standard deviation (dimensionless) |