kurtosis(redirected from Leptokurtic distribution)
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n. pl. kur·to·ses (-sēz′)
A quantity indicating how sharply a probability distribution function increases and decreases around the distribution's mean.
(Statistics) statistics a measure of the concentration of a distribution around its mean, esp the statistic B2 = m4/m22 where m2 and m4 are respectively the second and fourth moment of the distribution around the mean. In a normal distribution B2 = 3. See also platykurtic, mesokurtic, leptokurtic Compare skewness
[from Greek: curvature, from kurtos arched]
a measure of a curve describing the statistical frequency distribution in the region about its mode.
[1900–05; < Greek kýrtōsis convexity]