variance

/'veəriəns/
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variance

The variance in the data set was calculated by the statistician.

Definition
  1. Noun:
    • A state of difference or disagreement: The fact or quality of being different, divergent, or in conflict.
    • An official permission to deviate from a rule: A formal authorization, especially from an authority, allowing an exception to a regulation or standard.
    • A statistical measure of dispersion: In statistics, a number that represents how much a set of values (a random variable) is spread out from their average (mean) value.
    • The act or instance of varying: A change or difference in condition, amount, or level.
Examples of Usage
  • Noun:
    • There is a significant variance between the two witness accounts of the event.
    • The city council granted a zoning variance to allow the building's construction.
    • The variance in the test scores was high, indicating a wide range of student performance.
    • Daily variance in temperature is common in desert climates.
Advanced Usage
  • "To be at variance with": To be in disagreement or conflict with someone or something.
    • His actions were completely at variance with his stated principles.
  • "Analysis of variance (ANOVA)": A statistical method used to test differences among two or more means.
    • The researcher used analysis of variance to compare the results from the three experimental groups.
Variants and Related Words
  • Vary (verb): To change or be different.
    • Prices vary depending on the season.
  • Variable (noun/adjective): (Something) likely to change or vary.
    • The weather is a variable we cannot control.
  • Invariable (adjective): Never changing.
    • He follows an invariable morning routine.
  • Variation (noun): A change or slight difference in condition, amount, or level.
    • There are many regional variations in pronunciation.
Synonyms
  • Discrepancy: A lack of compatibility or similarity between two or more facts.
  • Divergence: The process or state of separating or becoming different.
  • Dispersion: The state of being dispersed or spread out (statistical synonym).
  • Deviation: The action of departing from an established course or accepted standard.
Related Phrases
  • Budget variance: In accounting, the difference between a budgeted amount and the actual amount spent or earned.
    • A favorable budget variance means spending was less than planned.
  • Variance report: A document that details and explains differences between planned and actual performance.
    • The manager reviewed the monthly variance report.
Related Idioms
  • At sixes and sevens: In a state of confusion or disagreement (conceptually related to being at variance).
    • The team's plans were all at sixes and sevens after the sudden change.
variance

The variance in the data set was calculated by the statistician.

Noun
  1. an activity that varies from a norm or standard
    • any variation in his routine was immediately reported
  2. an official dispensation to act contrary to a rule or regulation (typically a building regulation)
    • a zoning variance
  3. the quality of being subject to variation
  4. a difference between conflicting facts or claims or opinions
    • a growing divergence of opinion
  5. the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
  6. discord that splits a group
  7. an event that departs from expectations

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