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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.

If a manager’s or strategy’s alpha is less than 5%, or the standard deviation of return is higher than 20%, then the required length of time is even longer.

From MarketWatch • Jun. 17, 2026

Their final result brought theoretical predictions and experimental measurements into agreement within less than half a standard deviation.

From Science Daily • May 19, 2026

Tesla’s average analyst price target is $408 with a 35% standard deviation, implying wider outcomes than other tech giants.

From Barron's • May 4, 2026

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

No other breed falls outside the standard deviation.

From "The Miscalculations of Lightning Girl" by Stacy McAnulty