leptokurtic distribution


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.