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.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

kurtosis

(kəˈtəʊsɪs)

(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]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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

A visual inspection of histograms, normal Q-Q plots and box plots showed that pre and post intervention scores were approximately normally distributed, with a skewness of 0.16 (SE=0.221) and a kurtosis of -1.45 (SE=0.438) for pre-intervention and a skewness of -0.206 ( SE=.221) and kurtosis of -0.678 (SE= 0.483) for post intervention group.

Assessing Effectiveness of Teacher Training in Cultivating Peace: An Experimental Study

Table-I: Mean, standard deviation cronbach's alpha reliability, skewness, kurtosis and range of brief coping scale and self-report measure of emotional intelligence scale, (N = 100).

CAREGIVERS OF MENTALLY ILL PATIENTS: ROLE OF COPING STYLE AND EMOTIONAL INTELLIGENCE

The parameters obtained from functional sequences were kurtosis from T2-weighted images, ADC from DWI, and [K.sup.trans], [k.sub.ep], [v.sub.e] and IAUGC90 (area under the curve) from perfusion.

Multiparametric MRI in rectal cancer

The fitness function proposed in this paper is based on kurtosis and mutual information.

Blind Audio Source Separation Based On High Exploration Particle Swarm Optimization

The results from Wilcoxon signed-rank tests show that retailers inflated the demand forecast significantly less for friends (M = 1.23, SD = 18.12, skewness = - .11, kurtosis = 3.62) than for strangers (M = 10.55, SD = 29.06, skewness = .82, kurtosis = 7.34, Z = - 9.419, p < .001, Cohen's d = .451), which corresponds with a higher level of trustworthiness for friends.

Cooperative trust and trustworthiness in China and the United States: Does guanxi make a difference?

kurtosis (from the Greek word meaning bulging) is a measure of the "peakedness" of the probability distribution of a real-valued random variable.

Glossary of Statistical Terms

It detects the abnormality in the turbo pump operation with the simple time domain features like RMS, Crest Factor, Skew Factor and Kurtosis extracted in the noise-free decay region of vibration.

An efficient approach for the diagnosis of faults in turbo pump of liquid rocket engine by employing FFT and time-domain features

(2018) offer a clarification that "the skew (0.3365) and kurtosis (-0.3013) for the data in Fig.

Comments on "An Exceptional Summer during the South Pole Race of 1911/12"

All variables, except for Distance (D), exhibit high coefficient of variation (CV), positive skewness and high kurtosis (or leptokurtic distribution).

Determinants of Spatial Distribution of Highly Skilled Diasporas of Five ASEAN Countries