deviation

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deviation

 [de″ve-a´shun]
1. a turning away from the regular standard or course.
2. in ophthalmology, strabismus.
3. in statistics, the difference between a sample value and the mean.
axis deviation an axis shift in the frontal plane, as seen on an electrocardiogram. There are three types: Left, from −30° to −90°; Right, from +90° to +180°; and Undetermined, which may be either extreme left or extreme right, from −90° to +180°.
conjugate deviation dysfunction of the ocular muscles causing the two eyes to diverge to the same side when at rest.
sexual deviation sexual behavior or fantasy outside that which is morally, biologically, or legally sanctioned, often specifically one of the paraphilias.
standard deviation (SD) the dispersion of a random variable; a measure of the amount by which each value deviates from the mean. It is equal to the square root of the variance. For data that have a normal distribution, about 68 per cent of the data points fall within (plus or minus) one standard deviation from the mean and about 95 per cent fall within (plus or minus) two standard deviations. Symbol σ.
ulnar deviation a hand deformity, seen in chronic rheumatoid arthritis and lupus erythematosus, in which swelling of the metacarpophalangeal joints causes the fingers to become displaced to the ulnar side. Called also ulnar drift. See illustration.
 Ulnar deviation (ulnar drift) of the metacarpophalangeal joint, a characteristic sign of rheumatoid arthritis. From Pedretti and Early, 2001.

de·vi·a·tion

(dē'vē-ā'shŭn),
1. A turning away or aside from the normal point or course.
2. An abnormality.
3. In psychiatry and the behavioral sciences, a departure from an accepted norm, role, or rule. Synonym(s): deviance
4. A statistical measure representing the difference between an individual value in a set of values and the mean value in that set.
[L. devio, to turn from the straight path, fr. de, from, + via, way]

deviation

Vox populi A departure from a norm. See Septal deviation, Standard deviation.

de·vi·a·tion

(dē'vē-ā'shŭn)
1. A turning away or aside from the normal point or course.
2. An abnormality.
3. psychiatry, behavioral sciences A departure from an accepted norm, role, or rule.
Synonym(s): deviance.
4. statistics A measurement representing the difference between an individual value in a set of values and the mean value in that set.
[L. devio, to turn from the straight path, fr. de, from, + via, way]

deviation

See SEXUAL DEVIATION

deviation

1. In strabismus, the departure of the visual axis of one eye from the point of fixation. 2. A change in direction of a light ray resulting from reflection or refraction at an optical surface.angle of d. See angle of deviation.
conjugate deviation The simultaneous and equal rotations of the eyes in any direction. It may be physiological such as versions, or pathological, due to either muscular spasm or paralysis. See disjunctive movements; version.
dissociated vertical deviation  (DVD) A form of strabismus in which one eye apparently moves vertically without any compensatory movement from the other eye. Although initially felt to disobey Hering's law, it is now felt that Hering's law is observed if the horizontal, vertical and rotational aspects of the condition are considered together. This form of strabismus often accompanies infantile esotropia and is almost always noted from the period of infancy. The misalignment can be either latent or manifest, and may require operative intervention if of a great degree. See Faden procedure; Bielschowsky's phenomenon test.
Hering-Hillebrand deviation The deviation of the apparent frontoparallel plane horopter from the Vieth-Müller circle (horopter) (Fig. D2).
minimum deviation of a prism See minimum deviation of a prism.
primary deviation The deviation found in paralysis of an extraocular muscle when the unaffected eye is fixating.
secondary deviation The deviation found in paralysis of an extraocular muscle when the eye with the paralytic muscle is fixating.
skew deviation A form of strabismus, typically vertical, that does not follow any standard or typical pattern and is usually difficult to quantify. It may be due to a midbrain disorder, multiple sclerosis or myasthenia gravis.
vertical deviation 
1. Type of ocular deviation found in strabismus in which the deviating eye is rotated upward with respect to the fixating eye.
2. Upward ocular deviation of an occluded eye in the cover test, as found in hyperphoria or hypophoria.
Fig. D2 Hering-Hillebrand deviation H-H (AFPP, apparent frontoparallel plane horopter); V-M (Vieth-Müller circle; X, fixation point)enlarge picture
Fig. D2 Hering-Hillebrand deviation H-H (AFPP, apparent frontoparallel plane horopter); V-M (Vieth-Müller circle; X, fixation point)

de·vi·a·tion

(dē'vē-ā'shŭn)
1. A turning away or aside from the normal point or course.
2. An abnormality.
[L. devio, to turn from the straight path, fr. de, from, + via, way]
References in periodicals archive ?
The related deviational variable of [P.sub.51], [P.sub.52] and [P.sub.53] are not zero ([d.sup.-.sub.22] = 890), ([d.sup.+.sub.23] = 890), and [d.sup.+.sub.24] = 2,080).
The standard deviational ellipse for the centered average value for 2001 (the most current data year in the study) shows a wider dispersion for the unknowns on the east-to-west axis.
The software that is used to define these hotspots is known as STAC (the `Spatial and Temporal Analysis of Crime, software) and uses a procedure which identifies standard deviational ellipses from a series of geographically referenced offence locations.
If both of the deviational variables is equal to zero, then this occurs.
In general, the data reported in Saville & Willson from empirical studies and other computer-simulated data sets tended to show effects of greater range restriction than that resulting from deviational ipsatization.
From the above discussion, it can be deduced that deviational variables are mutually exclusive.
The deviational variable for spending less than the available funds in constraint (4), i.e., [d.sup.-.sub.3], was included to keep the model as generic as possible.
Also at optimality, [beta] will be a basic variable and therefore both deviational parameters associated with one observation must be non-basic, and that observation is perfectly predicted at the given quantile level.
What is now proposed as new-emerging, deviational mystics and other interpretations which is as whole held on mysticism and idealism is beyond social phenomena.
Each standard deviational distance around a centroid measures a straight-line distance, computed from either the latitudes or the longitudes of the offences during a week.
The standard deviational ellipse was also calculated, showing the dispersion in two dimensions (Crimestat) of the mean centers.
Natural language processing (NLP), place name recognition, and centrographic measurement methods (mean center, median center, and standard deviational ellipse), were adopted in their research to analyze Twitter users' geographical awareness at different scales.