Results 11 to 20 of about 6,790,612 (291)

Approximate skew normal distribution [PDF]

open access: yesJournal of Advanced Research, 2010
We propose a new approximate skew normal distribution, it is easy to calculate, convenient, mathematically tractable and is in a closed form. It is particularly useful when the probability density function occurs in an expression to be used for further ...
Samir K. Ashour, Mahmood A. Abdel-hameed
doaj   +5 more sources

A multivariate skew normal distribution [PDF]

open access: yesJournal of Multivariate Analysis, 2004
In this paper, we define a new class of multivariate skew-normal distributions. Its properties are studied. In particular we derive its density, moment generating function, the first two moments and marginal and conditional distributions.
Gupta, Arjun K.   +2 more
core   +2 more sources

The Extended Half-Skew Normal Distribution

open access: yesMathematics, 2022
A new class of densities for modelling non-negative data, which is based on the skew-symmetric family of distributions proposed by Azzalini is introduced.We focus on the model generated by the skew-normal distribution, called Extended Half Skew-Normal ...
Karol I. Santoro   +4 more
doaj   +2 more sources

The Skew-Normal Distribution in SPC

open access: yesRevstat Statistical Journal, 2013
Modeling real data sets, even when we have some potential (as)symmetric models for the underlying data distribution, is always a very difficult task due to some uncontrollable perturbation factors.
Fernanda Figueiredo , M. Ivette Gomes
doaj   +3 more sources

The skew-normal distribution

open access: yes, 2004
The book reviews the state-of-the-art advances in skew-elliptical distributions and provides many new developments in a single volume, collecting theoretical results and applications previously scattered throughout the literature.
DALLA VALLE, ALESSANDRA
core   +4 more sources

The Exponential-Centred Skew-Normal Distribution [PDF]

open access: yesSymmetry, 2020
Data from some research fields tend to exhibit a positive skew. For example, in experimental psychology, reaction times (RTs) are characterised as being positively skewed. However, it is not unlikely that RTs can take a normal or, even, a negative shape.
Guillermo Martínez-Flórez   +2 more
core   +2 more sources

On the Skew-Normal-Cauchy Distribution

open access: yesCommunications in Statistics - Theory and Methods, 2011
In this article, we study further properties of a skew normal distribution, called the skew-normal-Cauchy (SNC) distribution by Nadarajah and Kotz (2003).
BOLFARINE, Heleno   +3 more
core   +6 more sources

The Skew Normal Distribution

open access: yes, 2017
This chapter considers the univariate skew-normal distribution, a generalization of the normal that includes the normal as a special case. The most natural parametrization is non-standard. This is because the Fisher information matrix is then singular at
Russell Cheng
core   +2 more sources

Characterization of the skew-normal distribution

open access: yesAnnals of the Institute of Statistical Mathematics, 2004
Non-normal distribution, chi-square distribution, half-normal distribution, skew-symmetric distribution, sequence of moments, induction, decomposition, characteristic function,
Jose Sanqui, Truc Nguyen, Arjun Gupta
core   +3 more sources

Properties and Applications of a New Family of Skew Distributions

open access: yesMathematics, 2021
We introduce two families of continuous distribution functions with not-necessarily symmetric densities, which contain a parent distribution as a special case.
Emilio Gómez-Déniz   +3 more
doaj   +1 more source

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