deviation

Noun

• 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
    

• deviate behavior

• the error of a compass due to local magnetic disturbances

• the difference between an observed value and the expected value of a variable or function

• a variation that deviates from the standard or norm
  • the deviation from the mean
    

Related words

• Synonyms: 
  diversion , digression , deflection , deflexion , divagation , deviance , divergence , departure , difference