kurtosis | a measure of the peakedness or clustering
about the mean of a distribution; a high degree of k. is leptokurtic, a low degree is
platykurtic and a medium degree is mesokurtic; one formula to quantify k. is: (x^{4} /
N) / (x^{2} / N)^{2} which yields 3.0 for mesokurtic distributions. |