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Definition of "kurtosis" []

  • The general form or a quantity indicative of the general form of a statistical frequency curve near the mean of the distribution. (noun)
  • A measure of the concentration of a distribution around its mean, esp the statistic B2 = m4/m22 where m2 and m4 are respectively the second and fourth moment of the distribution around the mean. In a normal distribution B2 = 3 (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Use "kurtosis" in a sentence
  • "Moreover, the central limit theorem of probability theory does not apply in this context because empirical evidence shows that a constant standard deviation is an inaccurate measure of investment risk, due to the fact that investment performance, is typically skewed and exhibits kurtosis."
  • "I presume there was minimal kurtosis in these distributions."
  • "There is a kurtosis measure, a fourth moment as standard deviation is a second moment, for this variation."