Deviation

Deviation may refer to:

Mathematics and engineering

 * Allowance (engineering), an engineering and machining allowance is a planned deviation between an actual dimension and a nominal or theoretical dimension, or between an intermediate-stage dimension and an intended final dimension.
 * Deviation (statistics), the difference between the value of an observation and the mean of the population in mathematics and statistics
 * Standard deviation, which is based on the square of the difference
 * Absolute deviation, where the absolute value of the difference is used
 * Relative standard deviation, in probability theory and statistics is the absolute value of the coefficient of variation
 * Deviation of a local ring in mathematics
 * Deviation of a poset in mathematics
 * Frequency deviation, the maximum allowed "distance" in FM radio from the nominal frequency a station broadcasts at
 * Magnetic deviation, the error induced in compasses by local magnetic fields

Albums

 * Deviation (Jayne County album), 1995
 * Deviation (Béla Fleck album), 1984
 * Deviate (album), a 1998 album by Kill II This

Other uses

 * Bid‘ah, Islamic term for innovations and deviations acts or groups from orthodox Islamic law (Sharia).
 * Deviance (sociology), a behavior that is a recognized violation of social norms
 * Deviation (1971 film), a horror film
 * Deviation (2006 film), a short film
 * Deviation, a 2012 British thriller film starring Danny Dyer
 * Deviation (law) is a departure from a contract or a ship's course, thus breaching the contract
 * Deviationism, an expressed belief which is not in accordance with official party doctrine
 * A work of art in the online community DeviantArt