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variance
(redirected from Sample variance)

   Also found in: Medical, Legal, Financial, Encyclopedia, Wikipedia 0.01 sec.
var·i·ance  (vâr-ns, vr-)
n.
1.
a. The act of varying.
b. The state or quality of being variant or variable; a variation.
c. A difference between what is expected and what actually occurs.
2. The state or fact of differing or of being in conflict. See Synonyms at discord.
3. Law
a. A discrepancy between two statements or documents in a proceeding.
b. License to engage in an act contrary to a usual rule: a zoning variance.
4. Statistics The square of the standard deviation.
5. Chemistry The number of thermodynamic variables, such as temperature and pressure, required to specify a state of equilibrium of a system, given by the phase rule.
Idiom:
at variance
In a state of discrepancy; differing: The facts are at variance with your story.

variance [ˈvɛərɪəns]
n
1. the act of varying or the quality, state, or degree of being divergent; discrepancy
2. an instance of diverging; dissension our variance on this matter should not affect our friendship
at variance
a.  (often foll by with) (of facts, etc.) not in accord; conflicting
b.  (of persons) in a state of dissension
4. (Mathematics & Measurements / Statistics) Statistics a measure of dispersion obtained by taking the mean of the squared deviations of the observed values from their mean in a frequency distribution
5. (Law) a difference or discrepancy between two steps in a legal proceeding, esp between a statement in a pleading and the evidence given to support it
6. (Government, Politics & Diplomacy) (in the US and Canada) a licence or authority issued by the board of variance to contravene the usual rule, esp to build contrary to the provision of a zoning code
7. (Chemistry) Chem the number of degrees of freedom of a system, used in the phase rule
8. (Economics, Accounting & Finance / Accounting & Book-keeping) Accounting the difference between actual and standard costs of production
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.variance - an event that departs from expectations
deviation, difference, divergence, departure - a variation that deviates from the standard or norm; "the deviation from the mean"
2.variance - discord that splits a group
dissension, discord - disagreement among those expected to cooperate
3.variance - the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
moment - the n-th moment of a distribution is the expected value of the n-th power of the deviations from a fixed value
standard deviation - the square root of the variance
covariance - (statistics) the mean value of the product of the deviations of two variates from their respective means
4.variance - a difference between conflicting facts or claims or opinionsvariance - a difference between conflicting facts or claims or opinions; "a growing divergence of opinion"
difference - the quality of being unlike or dissimilar; "there are many differences between jazz and rock"
leeway, allowance, tolerance, margin - a permissible difference; allowing some freedom to move within limits
5.variance - the quality of being subject to variationvariance - the quality of being subject to variation
changeability, changeableness - the quality of being changeable; having a marked tendency to change; "the changeableness of the weather"
variedness - characterized by variation
variegation - variability in coloration
personal equation - variability attributable to individual differences
6.variance - an official dispensation to act contrary to a rule or regulation (typically a building regulation); "a zoning variance"
dispensation - an exemption from some rule or obligation
7.variance - an activity that varies from a norm or standardvariance - an activity that varies from a norm or standard; "any variation in his routine was immediately reported"
activity - any specific behavior; "they avoided all recreational activity"

variance
noun difference, contrast, discrepancy, variation, disagreement, contradiction, inconsistency, deviation, divergence, incongruity, dissimilarity the variances in the stock price
difference agreement, similarity, correspondence, accord, unison, congruity
at variance in disagreement, conflicting, at odds, in opposition, out of line, at loggerheads, at sixes and sevens (informal), out of harmony Many of his statements are at variance with the facts.
Translations
variance [ˈvɛərɪəns] N to be at variance (with sb over sth)estar en desacuerdo or discrepar(con algn en algo)
his statement is at variance with the factssus afirmaciones no concuerdan con los hechos
variance [ˈvɛəriəns] n
to be at variance with sth [+ evidence, facts, ideas] → être en désaccord avec qch
variance
n
to be at variance with somebodyanderer Meinung sein als jd (→ about hinsichtlich +gen); he is constantly at variance with his parentser hat ständig Meinungsverschiedenheiten mit seinen Eltern; this is at variance with what he said earlierdies stimmt nicht mit dem überein, was er vorher gesagt hat
(= difference)Unterschied m; a slight variance of opinioneine unterschiedliche Auffassung; the predictable variance between the two sets of figuresdie vorhersehbare Abweichung der beiden Zahlenreihen (voneinander)
variance [ˈvɛərɪəns] n
a. to be at variance (with sb over sth)essere in disaccordo (con qn per qc)
to be at variance (with sth) (facts, statements) → essere in contraddizione (con qc)
b. (Math) → varianza


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A casual observation of gas price changes over time suggests a remarkable change in the volatility of gasoline price after 1998 (the sample variance triples after 1999).
Such things as sampling plans, sample size, how to minimize sample variance (e.
2]) for the Wilson intervals since the population variance, not the sample variance, is used in the calculation.
 
 
 
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