deviation

(n) a variation that deviates from the standard or norm
- the deviation from the mean
departure, difference, divergence,
(n) the difference between an observed value and the expected value of a variable or function
(n) the error of a compass due to local magnetic disturbances
(n) deviate behavior deviance,
(n) a turning aside (of your course or attention or concern)
- a diversion from the main highway
- a digression into irrelevant details
- a deflection from his goal
digression, divagation, diversion, deflexion, deflection,

departure difference divergence deviance digression divagation diversion deflexion deflection

deviationism deviationist