This paper discusses the security problem for statistical data bases and examines in some detail a couple of techniques, namely rounding and random rounding, which have been proposed to solve the statistical data base security problem. These techniques are studied in connection with a simple model of a statistical data base which produces crosstabulations. Analysis of the effects of both techniques on data base output indicates that, with suitable choice of base, rounding may be a more secure technique than random rounding.
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Achugbue et al. (1979) studied this question.