This is a great article on imputation – explaining the history of its usage, types, and comparisons with the 2000 Census. It also touches on a 2000 Census challenge – Utah vs Evans – which was based on North Carolina having a higher rate of imputation than Utah.
Read all about it:
Imputation: Adding People to the Census
D’Vera Cohn | pewsocialtrends.org
May 4, 2011