Ibrahim Elabid Ibrahim Elabid graduated with a Bsc degree (Honors), Second Class Division 1 in Statistics and Computer Science University of Khartoum, Faculty of Mathematical Sciences (Sudan), and an MSc degree in statistics from University of Khartoum. His research interests include Sampling and survey design, Multivariate Analysis and Multivariate Analysis. He is currently a Lecturer of Statistics, University of Khartoum, Department of Statistics, Faculty of Mathematical Sciences.