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. (c) HarperCollins Publishers Ltd 2016

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."