---
title: "Standard deviation mathematical notation"
description: "Standard deviation is a recurring research-paper notation family. Takes the square root of variance so spread is expressed in the variable's original…"
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/standard-deviation"
md_url: "https://fanout.sh/labs/math-decoder/symbol/standard-deviation.md"
last_updated: "2026-08-09"
access: "public"
---

# Standard deviation mathematical notation

Standard deviation is a recurring research-paper notation family. Takes the square root of variance so spread is expressed in the variable's original…

## Public overview

Standard deviation is a recurring research-paper notation family. Takes the square root of variance so spread is expressed in the variable's original units.

Standard deviation: Takes the square root of variance so spread is expressed in the variable's original units. Example: Take the square root of the variance.

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