Sadia Aslam (15389) creator text Islamabad (unpublished) 2018 monographic xii, 90 p. : ill. ; 30 cm. +CD Submitted in fulfillment of the requirements for the degree of Master of Philosophy to the Faculty of Basic Sciences and Humanities. Includes bibliographical references and appendices Thesis supervisor: Dr Muhammad Farid Khan Thesis (M.Phil.)--Riphah International University, 2018 English Paired comparison model Rao Kupper Model Bradley terry model Preference probability Posterior estimates Washing powder Surf brands FBSH 511.8 SAD