Some Results on the Distribution of Quadratic Forms in Normal Variables

A Compact Explicit Distribution for the Positive Definite Quadratic Forms in Normal Variates

A new Method to Estimate the Parameters of Quadratic Regression

The Statistical Curvature of Seemingly Unrelated Unrestricted Regression Equations. By: Ahmed Hassen A. Youssef

Stochastic and Deterministic Study of Ridge Regression

On the Modified Almost Unbiased Ridge Estimator in Linear Regression Model

A Comparative Study of Some Two –Parameter Ridge-Type and Liu-Type Estimators to Combat Multicollinearity Problem in Regression Models: Simulation and Application

SELECTION OF VARIABLES IN THE LINEAR REGRESSION WITH THE RESTRICTED RRQR ALGORITHM

Coefficient of Determination for Random Coefficient Regression Model. By: Ahmed Hassen A. Youssef

The Sampling Distribution of Ridge Parameter Estimator