On the relative efficiencies of randomized response devices with Greenberg unrelated question model

Abstract

In this paper two improved randomization devices RD-I and RD-II are proposed which consist of pack of cards having three types of statements written on it and on each card there is only one statement. A comparison of proposed devices is made with the existing Greenberg et al. [5] model which shows that the proposed randomization devices are better. A comparison within the proposed randomization devices has also been undertaken which shows that the RD-I is better than RD-II.