et la mesure d’aplatissement de la distribution, le kurtosis: Le coefficient de corrélation linéaire ou coefficient de Pearson r est une mesure du degré auquel. climat à été très chaud coefficient de viscosité climat à été très chaud coefficient d’aplatissement → coefficient d’efficacité → coefficient. On peut augmenter le coefficient d’aplatissement (kurtosis) par un mouvement de Ces relations d’ordre imposent des formes de croissance sur les graphiques.

Author: Shanos Nek
Country: Suriname
Language: English (Spanish)
Genre: Software
Published (Last): 10 October 2009
Pages: 420
PDF File Size: 1.29 Mb
ePub File Size: 7.33 Mb
ISBN: 931-6-12497-868-7
Downloads: 75320
Price: Free* [*Free Regsitration Required]
Uploader: Dazshura

The kurtosis is bounded below by the squared skewness plus 1: Principales influences historiques sur la colonisation des trois provinces. Regression Manova Principal components Canonical correlation Discriminant analysis Cluster analysis Classification Structural equation model Factor analysis Multivariate distributions Elliptical distributions Normal. Formulas related to the extensive property are more naturally expressed in terms of the excess kurtosis.

Note that in these cases the platykurtic densities have bounded supportwhereas the densities with positive or zero excess aplatissement are supported on the whole real line.

Kurtosis – Wikipedia

The reparameterized density is. This behavior, termed kurtosis convergencecan be used to detect image splicing in forensic analysis. From Wikipedia, the free encyclopedia. It is true, however, that the joint cumulants of degree greater than two for any multivariate normal distribution are zero.

Rather, it means the distribution produces fewer and less extreme outliers than does the normal distribution. Le niveau des assurances comprend quatre secteurs: The effects of kurtosis are illustrated using a parametric family of distributions whose kurtosis can be adjusted while their lower-order moments and cumulants remain constant.


One can see that the normal density allocates little probability mass to the regions far from the mean aolatissement thin tails”compared with the blue curve of the leptokurtic Pearson type VII density with excess kurtosis of 2.

1. Introduction.

On peut cependant en retirer quelques informations utiles Fig. Distribution Theory, 3rd EditionGriffin. Moment mathematics Statistical deviation and dispersion. Le niveau de la prestation de services: Z -test normal Student’s t -test F -test. The probability density function is given by.

Mean arithmetic geometric harmonic Median Mode. For non-normal samples, the variance of the sample variance depends on the kurtosis; for details, please see aplatisement. En ce qui concerne les soins de premier niveau: Si ce n’est pas le cas, dans quelle mesure leur mise en place est-elle envisageable?

Rappelons cependant que plusieurs communes sont absentes des statistiques.

Several well-known, unimodal and symmetric distributions from different parametric families are compared here. Spectral density estimation Fourier analysis Wavelet Whittle likelihood. Profile of the Health Systems in Chile: For example, suppose the r values are 0, 3, 4, 1, 2, 3, coefifcient, 2, 1, 3, 2, 0, 2, 2, 3, 2, 5, 2, 3, En ce qui concerne les AVPP, la moyenne nationale est de Note that the binomial coefficients appear in the above equation.

There are 3 distinct regimes as described below. Fresia, Los Muermos, Futaleufu et Palena. Observational study Natural experiment Quasi-experiment. Population de 65 ans et plus et consultations en urgence par habitant et par an.

The variance of the sample kurtosis of a sample of size n from the normal distribution is [13]. An alternative estimator of the population excess kurtosis is defined as follows:. All this is the price of ‘development’.


Mais le secteur des bas revenus exhibe une assez grande dispersion: By using this site, you agree to the Terms of Use and Privacy Policy.

Such distributions are sometimes termed super-Gaussian.

Aplahissement of Fluid Mechanics. Puerto Varas est la seule exception. This page was last edited on 18 Decemberat Each has a mean and skewness of zero. Examples of leptokurtic distributions include the Student’s t-distributionRayleigh distributionLaplace distributionexponential distributionPoisson distribution and the logistic distribution.

In a similar way to the concept of skewnesskurtosis is a descriptor of the shape of a probability distribution and, just as for skewness, there are different ways of quantifying it for a theoretical distribution and corresponding ways of estimating it from a sample from a population. For a bivariate normal distribution, the cokurtosis tensor has off-diagonal terms that are neither 0 nor 3 in general, so attempting to “correct” for an excess becomes confusing. Journal of Statistical Planning and Inference.

Sampling stratified cluster Standard error Opinion poll Questionnaire. The only data values observed or observable that contribute to kurtosis in any meaningful way are those outside the region of the peak; i. Wikimedia Commons has media related to Kurtosis. Au niveau du pays,

Author: admin