leptokurtic distribution


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Related to leptokurtic distribution: Mesokurtic, skewness, Excess kurtosis

leptokurtic distribution

[¦lep·tə¦kərd·ik ‚di·strə′byü·shən]
(statistics)
A distribution in which the ratio of the fourth moment to the square of the second moment is greater than 3, which is the value for a normal distribution; it appears to be more heavily concentrated about the mean, or more peaked, than a normal distribution.
References in periodicals archive ?
Hence, the underlying leptokurtic distribution of key monetary and financial variables seems to be in line with Minsky's financial fragility hypothesis (Minsky, 1982a, b), and Rindleberger's (1988, 2005) history of 'manias and crashes', and it is consistent with the origin and the course of the United States housing market implosion that initiated the 2007-2009 global financial crisis (Orlowski, 2008b).
Thus, the estimated values of a must be equal across the sums, provided that the underlying leptokurtic distribution is stable.
54 which reflects a highly leptokurtic distribution.