Results 11 to 20 of about 30,092 (257)

The Exponential-Centred Skew-Normal Distribution [PDF]

Symmetry, 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. While the Ex-Gaussian distribution is suitable to model positively skewed data, it cannot cope with
Guillermo Martínez-Flórez, Carlos Javier Barrera Causil, Fernando Marmolejo-Ramos   +2 more
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The multivariate skew-normal distribution [PDF]

Biometrika, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
AZZALINI, ADELCHI, DALLA VALLE, ALESSANDRA   +1 more
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Some Statistical Aspects of the Truncated Multivariate Skew-t Distribution

Mathematics, 2022
The multivariate skew-t distribution plays an important role in statistics since it combines skewness with heavy tails, a very common feature in real-world data.
Raúl Alejandro Morán-Vásquez, Edwin Zarrazola, Daya K. Nagar   +2 more
doaj   +1 more source

Inference and Local Influence Assessment in a Multifactor Skew-Normal Linear Mixed Model

Mathematics, 2022
This work considers a multifactor linear mixed model under heteroscedasticity in random-effect factors and the skew-normal errors for modeling the correlated datasets.
Zeinolabedin Najafi, Karim Zare, Mohammad Reza Mahmoudi, Soheil Shokri, Amir Mosavi   +4 more
doaj   +1 more source

An Alternative to the Log-Skew-Normal Distribution: Properties, Inference, and an Application to Air Pollutant Concentrations

Mathematics, 2022
In this study, we consider an alternative to the log-skew-normal distribution. It is called the modified log-skew-normal distribution and introduces greater flexibility in the skewness and kurtosis parameters.
Jaime Arrué, Reinaldo Boris Arellano-Valle, Osvaldo Venegas, Heleno Bolfarine, Héctor W. Gómez   +4 more
doaj   +1 more source

Quantile Estimation Using the Log-Skew-Normal Linear Regression Model with Application to Children’s Weight Data

Mathematics, 2023
In this article, we establish properties that relate quantiles of the log-skew-normal distribution to its parameters, allowing us to investigate the relationship between quantiles of a positive skewed response variable and a set of explanatory variables ...
Raúl Alejandro Morán-Vásquez, Anlly Daniela Giraldo-Melo, Mauricio A. Mazo-Lopera   +2 more
doaj   +1 more source

On the Skew-Normal-Cauchy Distribution

Communications in Statistics - Theory and Methods, 2010
In this article, we study further properties of a skew normal distribution, called the skew-normal-Cauchy (SNC) distribution by Nadarajah and Kotz (2003). A stochastic representation is obtained which allows alternative derivations for moments, moments generating function, and skewness and kurtosis coefficients.
Arrue, Jaime, Gomez, Hector W., Varela, Hector, Bolfarine, Heleno   +3 more
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A Conversation with Adelchi Azzalini and Narayanaswamy Balakrishnan

Statistica, 2020
On November 6, 2017, the Department of Statistical Sciences of the University of Bologna organized a workshop to celebrate the life and works of Antonella Capitanio, one year after her premature death.
Angela Montanari
doaj   +1 more source

A New Family of Distributions Based on Proportional Hazards

Mathematics, 2022
In this article, we introduce a new family of symmetric-asymmetric distributions based on skew distributions and on the family of order statistics with proportional hazards.
Guillermo Martínez-Flórez, Carlos Barrera-Causil, Osvaldo Venegas, Heleno Bolfarine, Héctor W. Gómez   +4 more
doaj   +1 more source

A multivariate skew normal distribution

Journal of Multivariate Analysis, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gupta, Arjun K., González-Farı́as, Graciela, Domı́nguez-Molina, J.Armando   +2 more
openaire   +1 more source