variance

Reading level: hard

Estimated CEFR level: C1 — Advanced

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun an event that departs from expectations
  2. noun discord that splits a group
  3. noun the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value

Etymology

From Middle English variance, variaunce, equivalent to vary + -ance, from Old French variance or directly from Anglo-Latin variaunce, veriaunce, wariaunce; all from Latin variantia.

In classic literature

Synonyms

discrepancy, variant

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