---
tag: 09753QQDCK
kind: concept
name: Central moment
aliases: [moment-about-the-mean]
msc: ["60E05"]
sources:
  - url: https://en.wikipedia.org/wiki/Central_moment
    locator: lead section
same_as:
  wikidata: Q1088747
  wikipedia: Central moment
---

## Summary

A central moment of a random variable is a moment of its deviation from the mean. The second central moment is the variance.
The node [[central moment|0ZT24EC90K]] gives the precise definition.