var·i·ance /ˈvɛriən(t)s, ˈvær-/
  不一致,變化,變異,分歧,不和
  variance
  變異數 方差
  Va·ri·ance n.
  1. The quality or state of being variant; change of condition; variation.
  2. Difference that produces dispute or controversy; disagreement; dissension; discord; dispute; quarrel.
     That which is the strength of their amity shall prove the immediate author of their variance.   --Shak.
  3. Law A disagreement or difference between two parts of the same legal proceeding, which, to be effectual, ought to agree, -- as between the writ and the declaration, or between the allegation and the proof.
  At variance, in disagreement; in a state of dissension or controversy; at enmity.  “What cause brought him so soon at variance with himself?”
  ◄ ►
  variance
       n 1: an event that departs from expectations [syn: discrepancy,
             variant]
       2: discord that splits a group [syn: division]
       3: the second moment around the mean; the expected value of the
          square of the deviations of a random variable from its
          mean value
       4: a difference between conflicting facts or claims or
          opinions; "a growing divergence of opinion" [syn: discrepancy,
           disagreement, divergence]
       5: the quality of being subject to variation [syn: variability,
           variableness] [ant: invariability, invariability]
       6: an activity that varies from a norm or standard; "any
          variation in his routine was immediately reported" [syn: variation]