#variance  the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
  supertype:  #moment.statistic  the n-th moment of a distribution is the expected value of the n-th power of the deviations from a fixed value
  subtype:  #standard_deviation  the square root of the variance
  subtype:  #covariance  statistical measure of the variance of two random variables measured in the same mean time period

No statement uses or specializes #variance; click here to add one.