deviation (
http://definr.com/deviation)
n 1: a variation that deviates from the standard or norm; "the
deviation from the mean" [syn:
divergence,
departure,
difference]
2: the difference between an observed value and the expected
value of a variable or function
3: the error of a compass due to local magnetic disturbances
4: deviate behavior [syn:
deviance]
5: 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" [syn:
diversion,
digression,
deflection,
deflexion]