Standard Deviation: From 3 Different Sources
A measure of the amount by which each value deviates from the mean; equal to the square root of the variance, i.e. the square root of the average of the squared deviations from the mean. It is the most commonly used measure of dispersion of statistical data.
A statistical measure of the spread of observations about their arithmetic mean. It is a measure regularly used in working out the results of trials about clinical treatment.
(in statistics) a measure of the dispersion of data about their arithmetic *mean, which is calculated from the square root of the variance of the readings in the series. The arithmetic sum of the amounts by which each observation varies from the mean must be zero, but if these variations are squared before being summated, a positive value is obtained: the mean of this value is the variance. (In practice a more reliable estimate of variance is obtained by dividing the sum of the squared deviations by one less than the total number of observations.) A large standard deviation indicates that data points vary across a wide range of values, whereas a small standard deviation indicates the opposite. See also significance.
standard error of the mean (SEM) the *standard deviation within a sample of observations divided by the square root of the number of observations comprising that sample. The SEM measures the extent to which the means of several different samples taken repeatedly from the same population would vary. It is therefore an indication of the accuracy of the sample mean as an estimate of the mean of the population as a whole.
Any type of pleasurable sexual practice which society regards as abnormal. Deviation may be related to the activity, such as EXHIBITIONISM or sadomasochistic sex (see SADISM; MASOCHISM); or to the sexual object, for example, shoes or clothes (fetishism). Di?erent cultures have di?erent values, and treatment is probably not required unless the deviation is antisocial or harmful to the participant(s). Aversion therapy, or the conditioning of a person’s behaviour, may help if treatment is considered necessary.... sexual deviation
A level of quality that all health plans and providers are required to meet in order to offer services to clients/consumers.... minimum standard
A population in which the age and sex composition is known precisely, as a result of a census. A standard population is used as a comparison group in the procedure for standardizing mortality rates.... standard population
A standard against which facilities or programmes are evaluated to determine if they will be accredited.... accreditation standard
The term for describing the persistent and involuntary turning of both eyes in any one direction, and is a sign of a lesion in the brain.... conjugate deviation
The quality of care and quality of life objectives set by an authority which the service providers should strive to achieve for all people.... outcome standard
A quality, measure or reference point established as a rule or model by authorities, custom or general consent, against which things can be evaluated or should conform.... standard
In statistics, the standard error is defined as the standard deviation of an estimate. That is, multiple measurements of a given value will generally group around the mean (or average) value in a normal distribution. The shape of this distribution is known as the standard error.... standard error
A form of sexual behaviour, most common in men, in which intercourse between adults is not the final aim. Forms of sexual deviation include exhibitionism, fetishism, paedophilia, and transvestism.... deviation, sexual
n. 1. (in ophthalmology) any abnormal position of one or both eyes. For example, if the eyes are both looking to one side when the head is facing forwards, they are said to be deviated to that side. Such deviations of both eyes may occur in brain disease. Deviations of one eye, such as *dissociated vertical deviation, come into the category of squint (see strabismus). 2. see sexual deviation.... deviation
(DVD) a condition in which one eye looks upwards when the amount of light entering it is reduced, e.g. when it is covered. The eye returns to its original position when the cover is removed. DVD is an acquired condition chiefly associated with infantile esotropia (convergent *strabismus). The deviation is dissociated since there is no movement of the focusing (i.e. uncovered) eye during the deviation or return phase.... dissociated vertical deviation
a neurological condition of the eyes in which one eye turns down while the other turns up. It is seen in disorders of the *cerebellum or *brainstem.... skew deviation
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