On double k-class estimators with multivariate t-errors

This paper aims at developing a framework for an analysis of exact and asymptotic bias,moment matrix and risk function for double k-class estimators in general linear regression model with multivariate t-errors. it should also contribute to wards a better understanding of the performance of double k-class estimators and the comparison between double k-class estimators and ordinary least squares estimators in the same linear regression model.the study will utilize monte-carlo approach to investigate the asymptotic properties of several estimators arising from the family of double k-class estimators. © 2016 pakistan journal of statistics.