Deviance

A measure for judging the extent to which a model explains the variation in a set of data when the parameter estimation is carried out using the method of maximum likelihood. The deviance, D, is given by

, where L_c is the likelihood of the current model, and L_s is the likelihood of the saturated model. The deviance has an approximate chi-squared distribution; the number of degrees of freedom is given by the difference in the numbers of parameters in the two models.

A summary of how well a model fits the data is provided by McFadden's R² (which is also known as the likelihood ratio index) defined by


, where L₀ is the likelihood corresponding to the model that describes the response variable as being a constant unaffected by any explanatory variables.

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noun

The condition of being abnormal: aberrance, aberrancy, aberration, abnormality, anomaly, deviancy, deviation, irregularity, preternaturalness, unnaturalness. See good/bad, usual/unusual.

Any social behaviour that departs from that regarded as ‘normal’ or socially accepted within a society or social context.

This entry contains information applicable to United States law only.

Conspicuous dissimilarity with, or variation from, customarily acceptable beha- vior.

Deviance implies a lack of compliance to societal norms, such as by engaging in activities that are frowned upon by society and frequently have legal sanctions as well, for example, the illegal use of drugs.

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Dansk (Danish)
n. - afvigelse

Nederlands (Dutch)
afwijkend gedrag, afwijking

Français (French)
n. - (gén, Psych) déviance de

Deutsch (German)
n. - Abweichung

Ελληνική (Greek)
n. - αποκλίνουσα συμπεριφορά

Italiano (Italian)
deviazione

Português (Portuguese)
n. - desvio (m)

Русский (Russian)
отклонение, извращение

Español (Spanish)
n. - desviación

Svenska (Swedish)
n. - avvikande beteende

中文（简体）(Chinese (Simplified))
反常, 偏差, 越轨, 偏向, 误差, 偏航

中文（繁體）(Chinese (Traditional))
n. - 反常, 偏差, 越軌, 偏向, 誤差, 偏航

한국어 (Korean)
n. - (성욕) 이상

日本語 (Japanese)
n. - 逸脱

العربيه (Arabic)
‏(الاسم) انحراف, جدوة أو حاله أو سلوك منحرف, شذوذ‏

עברית (Hebrew)
n. - ‮סטייה‬

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