Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z

ambiguity rule

Abbreviations / Acronyms / Synonyms:

p,q rule


  It is assumed that out of publicly available information the contribution of one individual to the cell total can be estimated to within q per cent (q=error before publication); after the publication of the statistic the value can be estimated to within p percent (p=error after publication). In the (p,q) rule the ratio p/q represents the information gain through publication. If the information gain is unacceptable, the cell is declared as confidential. The parameter values p and q are determined by the statistical authority and, thus, define the acceptable level of information gain. In some [National Statistical Organizations] the values of p and q are confidential.
NIST SP 800-188 under p,q rule from OECD Glossary of Statistical Terms