Platykurtosis


Platykurtosis
A statistical measure that indicates the level of peakedness of a probability distribution. Specifically, platykurtosis describes a distribution that has a negative excess kurtosis and appears flatter than a normal distribution, which has a kurtosis value of three.

The opposite of platykurtosis is leptokurtosis, which describes a distrbution that is more peaked than a normal distribution. Also, a platykurtic distrbution has thinner tails while a leptokurtic distribution has fatter tails. Fatter tails equates to more data points at the two ends of the distribution, while a thin tail indicates there are more data points centred around the mean.


Investment dictionary. . 2012.

Look at other dictionaries:

  • platykurtosis — /plat ee kerr toh sis/, n. Statistics. the state of being platykurtic. [1935 40; PLATYKURT(IC) + OSIS] * * * …   Universalium

  • platykurtosis — adjective The property of having negative kurtosis Ant: leptokurtosis See Also: kurtosis, platykurtic …   Wiktionary

  • platykurtosis — platy·kurtosis …   English syllables

  • platykurtosis — | ̷ ̷ ̷ ̷+ noun Etymology: New Latin, from English platykurtic + New Latin osis : the condition of being platykurtic * * * /plat ee kerr toh sis/, n. Statistics. the state of being platykurtic. [1935 40; PLATYKURT(IC) + OSIS] …   Useful english dictionary

  • kurtosis — noun A measure of peakedness of a probability distribution, defined as the fourth cumulant divided by the square of the variance of the probability distribution. See Also: leptokurtosis, mesokurtosis, platykurtosis, excess kurtosis, mesokurtic,… …   Wiktionary

  • leptokurtosis — adjective The property of having positive kurtosis. Syn: fat tail, heavy tail Ant: platykurtosis See Also: kurtosis, leptokurtic …   Wiktionary

  • platykurtic — adjective said of a distribution if it has negative kurtosis Syn: platykurtotic Ant: leptokurtic See Also: kurtosis, platykurtosis …   Wiktionary


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