1. Department of Statistics, Quaid-i-Azam University, Islamabad, Pakistan
2. Government Higher Secondary School Aboha, Swat, Pakistan
3. Department of Quantitative Methods, School of Business and Economics, University of Management and Technology, Lahore, Pakistan
4. College of Statistical and Actuarial Sciences, University of the Punjab, Lahore, Pakistan
5. Department of Statistics, Mathematics and Computer Science, The University of Agriculture, Peshawar, Khyber Pakhtunkhwa, Pakistan