symmetrical distribution

symmetrical distribution

[si¦met·rə·kəl ‚dis·trə′byü·shən]
(statistics)
A distribution in which observations equidistant from the central maximum have the same frequency. Also known as symmetric distribution.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
There is a tendency for symmetrical distribution, with a predilection for the extensor surfaces of the limbs and trunk.The face and the palms are seldom affected.
In this regard, when the responses to all items had a symmetrical distribution, there were no available results, regardless of the number of categories, for models with 5 factors and 100 cases and for models with 6 factors and 100 or 150 cases.
Dermatological examination revealed hypopigmented, 2-5 mm in size, nonfollicular, numerous keratotic lichenoid papules on the whole body with a symmetrical distribution (Figure 1(a)).
NSIP: The presence of ground glass opacities, irregular linear or reticular infiltrates and associated with traction bronchiectasis with most commonly bilateral and symmetrical distribution.
Depigmented macules are rectangular, rhomboid, or irregular in shape and usually have a symmetrical distribution. Typically, islands of hyperpigmentation are present within and at the border of depigmented areas.
Most common age group affected is in between 20-29 years (41%) and 30-39 years (29%); 95% were males and male-to-female ratio is 19:1; 50% were casual workers followed by farmers; 67% have exacerbations during summer; 50% has pruritus and 30% had pain; 95% of cases showed bilaterally symmetrical distribution of lesions affecting both the lower legs.
For aisle and general lighting, Amerlux's Producer is a linear pendant that, at 10 watts per foot, features a high-efficiency 60- or 80-degree batwing distribution, or a symmetrical distribution for more general illumination applications.
It comprises of a spectrum of diseases which include dyschromatosis universalis hereditaria (DUH) or acropigmentation of Dohi and segmental form called unilateral dermatomal pigmentary dermatosis (UDPD).1,2,3 Dyschromatosis symmetrica hereditaria (DSH) was first reported as a clinical entity by Toyama in 1929.4 It is characterized by symmetrical distribution of hyperpigmented and hypopigmented macules on the extremities more so over the dorsum of hands and feet.
Prurigo nodularis is characterized by a symmetrical distribution of itchy, hyperkeratotic, erosive nodules and papules.
For symmetrical distribution of surface height value of skewness is zero and for asymmetrical surface height distribution skewness may be negative or positive.
The share of distribution of GDP among the South Asian countries indicates that there is a lack of symmetrical distribution.

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