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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.

On weekends with high box-office results—one standard deviation above normal—tipping rates dropped to 20.56%.

From The Wall Street Journal • May 9, 2026

The average analyst price target on Bloomberg is about $408, with a 35% standard deviation, he added.

From Barron's • May 4, 2026

A better measure, Crill says, is the ratio of the 60/40 portfolio’s standard deviation to that of an all-stock portfolio.

From MarketWatch • Apr. 30, 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