skew vs skewness

skew

noun
  • A state of asymmetry in a distribution; skewness. 

  • A squint or sidelong glance. 

  • The coping of a gable. 

  • A phenomenon in synchronous digital circuit systems (such as computers) in which the same sourced clock signal arrives at different components at different times. 

  • Something that has an oblique or slanted position. 

  • A kind of wooden vane or cowl in a chimney which revolves according to the direction of the wind and prevents smoking. 

  • An oblique or sideways movement. 

  • A piece of rock lying in a slanting position and tapering upwards which overhangs a working-place in a mine and is liable to fall. 

  • A stone at the foot of the slope of a gable, the offset of a buttress, etc., cut with a sloping surface and with a check to receive the coping stones and retain them in place; a skew-corbel. 

  • A bias or distortion in a particular direction. 

adv
  • Askew, obliquely; awry. 

verb
  • To look at obliquely; to squint; hence, to look slightingly or suspiciously. 

  • To cause (a distribution) to be asymmetrical. 

  • To bias or distort in a particular direction. 

  • To move obliquely; to move sideways, to sidle; to lie obliquely. 

  • To jump back or sideways in fear or surprise; to shy, as a horse. 

  • To hurl or throw. 

  • To form or shape in an oblique way; to cause to take an oblique position. 

adj
  • Of a distribution: asymmetrical about its mean. 

  • Neither parallel nor perpendicular to a certain line; askew. 

  • Of two lines in three-dimensional space: neither intersecting nor parallel. 

skewness

noun
  • The property of being skew. 

  • A measure of the asymmetry of the probability distribution of a real-valued random variable; is the third standardized moment, defined as scriptstyle 𝛾₁=(𝜇₃)/(𝜎³),! where 𝜇₃ is the third moment about the mean and 𝜎 is the standard deviation. 

How often have the words skew and skewness occurred in a corpus of books? (source: Google Ngram Viewer )