1. Institute of Numerical Sciences, Kohat University of Science & Technology, Kohat, Pakistan
2. Department of Statistics, Muğla Sıtkı Koçman University, Bodrum, Turkey
3. Department of Banking and Finance, Ankara Yildirim Beyazit University, Ankara, Turkey
4. Department of Statistics, Hacettepe University, Ankara, Turkey
5. Department of Mathematics, Statistics and Physics, Qatar University, Doha, Qatar