Author details

Mohammed Elamin Hassan<sup>1</sup> , Henry Mwambi2 and Ali Babikir<sup>2</sup> \*

\*Address all correspondence to: ali.basher@gmail.com

1 Department of Economic and Applied Statistics, Sudan Academy for Banking and Financial Sciences, Khartoum, Sudan

2 School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
