|Census 2000 Gateway | Glossary|
Disclosure Review Board Rules/Requirements
These rules were approved by the Disclosure Review Board (DRB) on January 29, 2004. They will continue to be scrutinized and possibly changed as the DRB reviews more requests for special tabulations.
In some circumstances, Census 2000 special tabulations must be rounded to 10’s. In particular, any special tabulations presenting data on the population in households or the population in group quarters must be rounded to 10’s. These data could be found in the universe of a table, presented as a variable, or obtained by subtraction when comparing datasets (e.g., comparing the variables and universes of the special tabulation with those in Summary File 3).
The exact rounding scheme for rounding to 10’s is:
This rounding to the nearest 10 also applies to those special tabulations pertaining to poverty status and disability where there is a possibility of obtaining group quarters or household data by subtraction.
This rounding applies to all special tabulations that pertain to the population in households or the population in group quarters -- those done under reimbursable agreement, those done for working papers, tables, professional papers, etc. Examples of tabulations that must be rounded to 10’s can be obtained from the Decennial Programs Coordination Branch of the Population Division (301-763-2429).
Any totals or subtotals needed should be constructed before rounding. This assures that universes remain the same from table to table, and it is recognized that cells in a table will no longer be additive after rounding.