---
tag: 03Y6AQ2S0J
kind: concept
name: Sample mean
aliases: [empirical-mean, sample-average]
msc: [62F10]
specializes: [0Q5CG2NEQ8]
sources:
  - url: https://en.wikipedia.org/wiki/Sample_mean_and_covariance
    locator: lead section
close_to:
  - system: wikipedia
    id: Sample mean and covariance
    note: This node is the sample mean alone. The article covers the sample mean and the sample covariance, which is node ZP455BADJ3.
  - system: wikidata
    id: Q2348165
    note: This node is the sample mean alone. The article covers the sample mean and the sample covariance, which is node ZP455BADJ3.
inventory: [A59N164XN8]
---

## Summary

The sample mean of a sample is the arithmetic mean of its values. It is the usual estimator of the mean of the population.
The node [[sample mean|0QNRBHWV35]] gives the precise definition.