- 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. Academic. 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