# kurtosis

(redirected from Platykurtic distribution)
Also found in: Medical, Financial, Encyclopedia.
Related to Platykurtic distribution: Mesokurtic, leptokurtic, Leptokurtic distribution

## kur·to·sis

(kər-tō′sĭs)
n. pl. kur·to·ses (-sēz′)
A quantity indicating how sharply a probability distribution function increases and decreases around the distribution's mean.

[Greek kurtōsis, bulging, curvature, from kurtoun, to make bulge, from kurtos, convex; see sker- in Indo-European roots.]

## kurtosis

(kəˈtəʊsɪs)
n
(Statistics) statistics 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. See also platykurtic, mesokurtic, leptokurtic Compare skewness
[from Greek: curvature, from kurtos arched]

## kur•to•sis

(kɜrˈtoʊ sɪs)

n.
a measure of a curve describing the statistical frequency distribution in the region about its mode.
[1900–05; < Greek kýrtōsis convexity]
Translations
koeficient špičatostišpičatost
huipukkuus
kurtosiscoefficient d'aplatissement
Mentioned in ?
References in periodicals archive ?
The kurtosis coefficient (Kurtosis = -0,949) indicates a platykurtic distribution, broader than a normal distribution, having more values deviated from the average.
For the platykurtic distribution for n = 30, the modified Z- variance and the O'Brien tests were the best.
A platykurtic distribution is often the result of two normal distributions with similar variances but different means, as often occurs with a bimodal distribution.

Site: Follow: Share:
Open / Close