Karunarathne, A.W.S.P.; Perera, M.S.H.; Liyanage, U.P.
(International Conference on Applied Social Statistics (ICASS) - 2019, Department of Social Statistics, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2019)
Cellular and landline phones are at the forefront of telecommunication. There are two major categories of phones namely cellular phones and landline phones. Landline phones can be classified into another two sub categories ...