## standard deviation vs variance

standard deviation variance

### Definitions

• 1) statistics A measure of how spread out data values are around the mean, defined as the square root of the variance.
• 2) A statistic used as a measure of the dispersion or variation in a distribution or set of data, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.
• 3) the square root of the variance

### Definitions

• 1) computing, programming covariance and contravariance generally
• 2) The state of differing or being in conflict
• 3) A difference between what is expected and what happens
• 4) A discrepancy, especially between two legal documents
• 5) The act of varying or the state of being variable
• 6) statistics The second central moment in probability
• 7) The state or quality of being variant or variable; variation.
• 8) An exception to the application of a usual rule, granted by an authority on the basis of hardship or practicality.
• 9) The state or fact of being in disagreement or in conflict.
• 10) 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; the degrees of freedom of a system.
• 11) Statistics The square of the standard deviation.
• 12) A discrepancy between two statements or documents, especially between the charge in a criminal indictment and the evidence presented.
• 13) Difference or inconsistency.
• 14) (Law) A disagreement or difference between two parts of the same legal proceeding, which, to be effectual, ought to agree, -- as between the writ and the declaration, or between the allegation and the proof.
• 15) The quality or state of being variant; change of condition; variation.
• 16) Difference that produces dispute or controversy; disagreement; dissension; discord; dispute; quarrel.
• 17) (Statistics) The expected value of the square of the deviation from the mean of a randomly distributed variable; the second moment about the mean. This is also the square of the standard deviation.
• 18) in disagreement; in a state of dissension or controversy; at enmity.
• 19) discord that splits a group
• 20) the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
• 21) an activity that varies from a norm or standard
• 22) the quality of being subject to variation
• 23) a difference between conflicting facts or claims or opinions
• 24) an official dispensation to act contrary to a rule or regulation (typically a building regulation)
• 25) an event that departs from expectations
• 26) In a state of controversy or dissension; in a state of opposition or enmity.
• 27) Variableness; inconstancy.
• 28) The state of being or the act of becoming variant; alteration; variation; change; difference.
• 29) Difference that produces disagreement or controversy; dispute; dissension; discord.
• 30) Synonyms and Disagreement, etc. See difference.
• 31) Between the form of the writ or process by which the action was commenced and the form of the declaration or complaint.
• 32) In law, a discrepancy: Between pleadings and proof, as where a complaint mentions a wrong date, or the facts prove to be different from what was alleged.
• 33) In physical chemistry, that property of a chemical system which is expressed by the equation V = c + 2 — φ, where V is the variance, c the number of independent components, and φ the number of phases in which the system may exist. Systems are said to be invariant, univariant, bivariant, multivariant, etc., according to the value of V.

### Examples

• 1) The usual measure of this spread is the standard deviation or variance.
• 2) The standard statistical measures of spread are variance and standard deviation.
• 3) This idealistic concept is at variance with reality.
• 4) Our first step was to take a player's performance and measure the variance.
• 5) One is the average or "expected" return; the other is the variance or standard deviation.
• 6) It involves no skill, a high variance of returns and a negative expected value: you can expect not to recoup the cost of the ticket.
• 7) Perhaps the matter in variance is a secret, not fit to be divulged to any, much less to be brought upon the stage before the country; and therefore end it privately, that it may not be discovered.
• 8) Looking at the bottom graph, it appears the variance is a bit less than 5%.
• 9) Another factor could be the difference in variance in talents within the genders.
• 10) The Planning Board can not do that, any variance from the rules would have to come through the ZBA, but would probably be hard to get.
• 11) The King County Health Department recently notified restaurants that the sous vide process — cooking vacuum-sealed food in water baths at low, precisely-controlled temperatures — requires a variance from the health department, as well as an approvedHazard Analysis and Critical Control Points (HACCP) plan, a detailed food safety plan more commonly seen in large-scale or industrial operations.
• 12) Everywhere homosexuality and gender variance is being discriminated against; in more that 80 countries in the world, same sex relationships are criminalised and in 7 of them, death penalty can be enforced.
• 13) The hypothesis would assert that substantial local variance is deliberate.
• 14) If an exception or variance is needed, then the rules need changing.
• 15) And you don't have to assume any large difference in variance between the male and female population's abilities.
• 16) ‘Often Bollywood heroes are larger than life and their leadership qualities are totally at variance with reality.’
• 17) ‘In fact, the conclusion of our study is at variance with their assertion.’
• 18) ‘But it turned out worse than that: the 200 submissions were later judged to be totally at variance with the findings of the RAF's own Board of Inquiry into the accident.’
• 19) ‘‘Thus I'll be supporting him even though that's at variance with decisions I've taken in the past,’ he added.’
• 20) ‘The findings are at variance with recent preliminary figures from the National Educational Welfare Board.’
• 21) ‘As you point out, it's so obvious at variance with the truth.’
• 22) ‘His views are quite at variance with those of Prime Minister Howard on important aspects of foreign policy and Australia's place in the world.’
• 23) ‘And the conclusions expressed seem, well, slightly at variance with Grant's synopsis.’
• 24) ‘Mr Atkinson said there was a well defined process for members who had other interests which might be at variance with their role on the board.’
• 25) ‘He said such an approach was at variance with established legal principles with regard to fair procedure.’
• 26) ‘The public debate was misinformed and very much at variance with the position set out by the CEO.’
• 27) ‘Yet nothing could be more at variance with our educational heritage.’
• 28) ‘This is completely at variance with what the political system should be all about.’
• 29) ‘The story told through the video is completely at variance with the mood of the song.’
• 30) ‘As is typical of Edmonds's output, these songs work because he is smart enough to give them stylistic variance from other tracks.’
• 31) ‘Similarly, there is wide variance in study populations and control groups, follow-up periods, and statistical analysis.’
• 32) ‘Mitchell's failure to name those who paid for a private opinion poll during the election campaign appeared at variance with his public pleas for openness and accountability.’
• 33) ‘In short, they are legal attributes of the Crown which are significantly at variance with those enjoyed by private persons.’
• 34) ‘When a health authority is made aware of clinical activity at variance with best practice in the private sector, it is still duty bound to investigate and act.’
• 35) ‘The administration's use of military power was nonetheless limited: the rhetoric and the perception were at variance with the reality.’
• 36) ‘The figures were at variance with the Irish Hospitality Industry Alliance, which said up to 65,000 jobs would be lost if the blanket ban was introduced.’
• 37) ‘Clearly at variance with his boss, he can see no basis on which Britain should join the euro.’
• 38) ‘Last but not least, try not to be at variance with anyone.’
• 39) ‘In finance, most of the measures we use come straight from statistics - standard deviation, expected value, variance.’
• 40) ‘The method allowed him to investigate the independence of the sample mean and sample variance in certain cases.’
• 41) ‘A statistical test for significance of the regression coefficient requires its variance.’
• 42) ‘Common statistical methods, including chi square, analysis of variance, and multiple regression were used to analyze the data.’
• 43) ‘Random effects are typically assumed to follow normal distributions with zero mean and unknown variances, termed ‘variance components.’’
• 44) ‘It happens when a newspaper needs something from government officials - a zoning variance, a broadcast license renewal.’
• 45) ‘It needed variances because the building codes were set up for either residential or hotels, not both.’
• 46) ‘In New York's Chrysler Building, a code variance was required from the fire department to locate the control panel in a room off the lobby rather than beside the elevators.’
• 47) ‘Notwithstanding his opposition, the Committee of Adjustments approved the variance on April 19, 1995.’
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