Results 21 to 30 of about 30,095 (256)

A New Family of Distributions Based on Proportional Hazards

open access: yesMathematics, 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   +4 more
doaj   +1 more source

Multivariate measures of skewness for the skew-normal distribution

open access: yesJournal of Multivariate Analysis, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
BALAKRISHNAN N, SCARPA, BRUNO
openaire   +3 more sources

On the Skew-Normal-Cauchy Distribution

open access: yesCommunications 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   +3 more
openaire   +5 more sources

Comparing Optimal Portfolio Performance Based on Skew-Normal Distribution and Skew-Laplace-Normal Distribution: A Mean-Absolute Deviation-Entropy Approach [PDF]

open access: yesمدیریت صنعتی
Objective Investors typically seek to strike the optimal balance between potential returns and associated risks in their trades. Various models have been presented to choose the optimal portfolio using different approaches.
Hila Rezaei   +2 more
doaj   +1 more source

On an Absolute Autoregressive Model and Skew Symmetric Distributions

open access: yesStatistica, 2020
By exploiting the connection between a popular construction of a well-known skew-normal distribution and an absolute autoregressive process, we show how the stochastic process approach can lead to other skew symmetric distributions, including a skew ...
Dong Li, Howell Tong
doaj   +1 more source

A multivariate skew normal distribution

open access: yesJournal of Multivariate Analysis, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gupta, Arjun K.   +2 more
openaire   +1 more source

Applying regression models with skew-normal errors to the height of bedding plants of Stevia rebaudiana (Bert) Bertoni

open access: yesActa Scientiarum: Technology, 2014
The experiment had the objective of fitting regression models to data of the height of the bedding plants cultivated in three multicellular Styrofoam trays with three different cell volumes.
Terezinha Aparecida Guedes   +4 more
doaj   +1 more source

Alpha-skew-normal distribution [PDF]

open access: yesProyecciones (Antofagasta), 2011
The main object of this paper is to introduce an alternative form of generate asymmetry in the normal distribution that allows to fit unimodal and bimodal data sets. Basic properties of this new distribution, such as stochastic representation, moments, maximum likelihood and the singularity of the Fisher information matrix are studied.
openaire   +2 more sources

Improved parameter estimators for the flexible extended skew-t model with extensive simulations, applications and volatility modeling

open access: yesScientific African, 2023
This study introduces a new conditional innovation density called the generalized odd generalized exponentiated skew-t (GOGEST) distribution for the generalized autoregressive conditional heteroscedasticity (GARCH) volatility models.
O.D. Adubisi, A. Abdulkadir, D.J. Adashu
doaj   +1 more source

A Sample Selection Model with Skew‐normal Distribution [PDF]

open access: yesScandinavian Journal of Statistics, 2015
AbstractNon‐random sampling is a source of bias in empirical research. It is common for the outcomes of interest (e.g. wage distribution) to be skewed in the source population. Sometimes, the outcomes are further subjected to sample selection, which is a type of missing data, resulting in partial observability. Thus, methods based on complete cases for
Ogundimu, Emmanuel O., Hutton, Jane L.
openaire   +4 more sources

Home - About - Disclaimer - Privacy