different between variance vs precision

English

Alternative forms

• variaunce (obsolete)
• var (abbreviation)

Etymology

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

Pronunciation

• (UK) IPA^(key): /?v???i.?ns/
• (US) IPA^(key): /?væ?i.?nts/ (Mary–marry–merry distinction)
• (US) IPA^(key): /?v??i.?nts/ (Mary–marry–merry merger)

Noun

variance (countable and uncountable, plural variances)

1. The act of varying or the state of being variable.
2. A difference between what is expected and what is observed; deviation.
3. The state of differing or being in conflict.
4. An official permit to do something that is ordinarily forbidden by regulations.
5. (law) A discrepancy between two legal documents.
6. (law) A departure from a cause of action originally in a complaint.
8. (statistics) The second central moment in probability.
9. (physics, chemistry, biology) The number of degrees of freedom in a system.
10. (computing, programming) Covariance and contravariance generally.

    Depending on the variance of the type constructor, the subtyping relation of the simple types may be either preserved, reversed, or ignored for the respective complex types.

Derived terms

Translations

French

Etymology

From Latin variantia.

Pronunciation

• IPA^(key): /va.?j??s/
• Rhymes: -??s

Noun

variance f (plural variances)

1. variance

Further reading

• “variance” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

English

Etymology

From Middle French precision.

Pronunciation

• IPA^(key): /p???s?.?(?)n/
• Rhymes: -???n

Noun

precision (countable and uncountable, plural precisions)

1. The state of being precise or exact; exactness.
2. The ability of a measurement to be reproduced consistently.
3. (mathematics) The number of significant digits to which a value may be measured reliably.
4. (bridge) A bidding system that makes use of many artificial bids to describe a hand quite precisely.

Derived terms

• arbitrary-precision

Translations

See also

• accuracy

References

• precision on Wikipedia.Wikipedia

Adjective

precision (not comparable)

1. Used for exact or precise measurement.
2. Made, or characterized by accuracy.

Translations

Anagrams

• isoprenic

Middle French

Alternative forms

• précision

Etymology

First known attestation 1380, borrowed from Latin praecisi?.

Noun

precision f (plural precisions)

1. precision (quality of being precise)

References