This data set contains observations from a randomized response survey conducted in a university to investigate cheating behaviour in exams.
The sample is drawn by stratified sampling by university faculty with uniform allocation.
The randomized response technique used is the Eriksson model (Eriksson, 1973) with parameter *p=0.5* and *S* a discrete uniform variable at the points (0,1,3,5,8).

The data were used by Arcos et al. (2015).

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A data frame containing 102 students of a sample extracted from a population of *N=53376* divided into four strata.
The variables are:

ID: Survey ID of student respondent

ST: Strata ID

z: The randomized response to the question: How many times have you cheated in an exam in the past year?

Pi: first-order inclusion probabilities

Arcos, A., Rueda, M. and Singh, S. (2015).
*A generalized approach to randomised response for quantitative variables.*
Quality and Quantity 49, 1239-1256.

Eriksson, S.A. (1973).
*A new model for randomized response.*
International Statistical Review 41, 40-43.

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