A modified quantitative randomized response model
2002
Mangat, N.S. | Singh, S. (Morrison Scientific Inc.,Avenue SW, calgary, Alberta (Canada))
Greenberg et al. [2] proposed a randomized response (RR) model to collect numerical data on sensitive characters. Their model requires two randomized devices Ri to be used for each respondent in sample i,i=1,2. Thevariance of their estimator attains a minimum if probability p2, representing the sensitive character in RR device R2, is taken as zero. Although this choice provides an economical srategy, the response of the respondents selected in both the samples (with replacement) can be linked to their actual status. Thus the choice p2=0 renders the RR model non functional. In such a situation the obvious choice according to Greenberg et al. [2] is left to the usual strategy by choosingp1 + p2 = 1 model for the situation when p2 = 0 choice becomes non-functional.
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