Changes

==Undercount and Overcount==

==Undercount and Overcount==

Statisticians now estimate that the 1990 Census missed about 4.7 million people who should have been counted.  However, they estimate that the 2000 Census OVERcounted by about two million, as people who moved around were counted twice.<ref> See Freedman and Wachter (2004) pp. 6-8</ref>

Statisticians now estimate that the 1990 Census missed about 4.7 million people who should have been counted.  They estimate that the 2000 Census missed 6.4 million people, and double counted 3.1 million others, for a net undercount of 3.3 million. <ref> People who moved around were sometimes counted twice, as were some students and prisoners who were counted at home and at their institutions. See Freedman and Wachter (2004) pp. 6-8</ref>

==Further reading==

==Further reading==