Author/Authors :
Kheradmandi، A. نويسنده 1Department of Statistics, Faculty of Science, Tarbiat Modares University, Tehran, Islamic Republic of Iran , , Mohammadzadeh، M. نويسنده , , Sanjari Farsipour2، N. نويسنده 2Department of Mathematics, Faculty of Basic Science, Alzahra University, Tehran, Islamic Republic of Iran ,
Abstract :
In this paper we consider several generalizations of the skew t-normal distribution, and some of their properties. Also, we represent several theorems for constructing each generalized skew t-normal distribution. Next, we illustrate the application of the proposed distribution studying the ratio of two heavy metals, Nickel and Vanadium, associated with crude oil in Shadgan wetland in the south-west of Iran at the head of the Persian Gulf.
