In sampling survey, questions requiring personal or controversial assertions often give rise to resistance. It is difficult to get accurate data from interviewee and hard to raise the quality of these answers given by interviewee when the survey’s topic is sensitive. In order to solve this trouble, the “Randomized Response design” is always used to reduce or estimate these biases. In this paper, a two-unrelated sensitive questions randomized response design which combine Warner’s and Simmons’ models is proposed. The properties about this extended model have been fully discussed. The best parameters combination of this model has also been proposed in this paper. The case which respondents do not report truthfully is also considered.
Journal of information & optimization sciences 17(1), pp.185-198