different between leptokurtosis vs kurtosis

English

Etymology

lepto- +? kurtosis

Noun

leptokurtosis (uncountable)

1. (statistics) The property of having kurtosis greater than that of a normal distribution; equivalently, having positive excess kurtosis.

Synonyms

• (positive kurtosis): fat tail, heavy tail

Antonyms

• platykurtosis

Related terms

• kurtosis
• leptokurtic

Translations

See also

• mesokurtosis

English

Etymology

Coined c. 1895 by Karl Pearson (published 1899 in "On certain Properties of the Hypergeometrical Series, and so on the fitting of such series to Observation Polygons in the Theory of Chance", Phil. Mag.).From Ancient Greek ???????? (kúrt?sis, “bulging, convexity”), from ?????? (kurtós, “bulging”).

Noun

kurtosis (countable and uncountable, plural kurtoses or kurtosises)

1. (statistics) A measure of "heaviness of the tails" of a probability distribution, defined as the fourth cumulant divided by the square of the variance of the probability distribution.
2. (statistics) Excess kurtosis: the difference between a given distribution's kurtosis and the kurtosis of a normal distribution.

Derived terms

Translations