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Definitions

standard deviation

NOUN

predictable difference

Synonyms

WEAK

SD deviation normal deviation predictable error probable error range of error standard error

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Others criticized Cliffwater’s marketing, especially when it boasted of hedge-fund-like returns with minimal risks, citing industry metrics like Sharpe ratios and standard deviation.

From The Wall Street Journal • Apr. 1, 2026

Each standard deviation drop in relative amplitude was linked to a 54% increase in dementia risk.

From Science Daily • Jan. 3, 2026

A standard deviation is a statistical measure of how spread out a data set is from its mean.

From MarketWatch • Nov. 10, 2025

New York provides a range of standard deviation, specifying a 68% probability that the GDP figure will fall between 1.07% and 3.99%.

From Los Angeles Times • Oct. 10, 2023

No other breed falls outside the standard deviation.

From "The Miscalculations of Lightning Girl" by Stacy McAnulty