a measure of the symmetry of a distribution around its mean, esp the statistic B1 = m3/(m2)3/2, where m2 and m3 are respectively the second and third moments of the distribution around the mean. In a normal distribution, B1 = 0
kurtosis
skewness in American English
(ˈskjunɪs)
noun
1.
the fact or condition of being skew, or, esp., unsymmetrical
2. Statistics
the lack of symmetry of the curve for a frequency distribution