Kurtosis definition

kər-tōsĭs
Frequency:
(statistics) A measure of "peakedness" of a probability distribution, defined as the fourth cumulant divided by the square of the variance of the probability distribution.
noun
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A quantity indicating how sharply a probability distribution function increases and decreases around the distribution's mean.
noun
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The degree of peakedness of the graph of a statistical distribution, indicative of the concentration around the mean.
noun
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The general form or a quantity indicative of the general form of a statistical frequency curve near the mean of the distribution.
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Other Word Forms

Noun

Singular:
kurtosis
Plural:
kurtoses

Origin of kurtosis

  • Greek kurtōsis bulging, curvature from kurtoun to make bulge from kurtos convex sker-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek κύρτωσις (kurtōsis, “bulging, convexity”), from κυρτός (kurtos, “bulging”).

    From Wiktionary