The Census Bureau thinks the only way to improve the numbers is to make more use of statistical sampling methods.

ECONOMIST: Statistics

Improper sampling could also impact the accuracy of common methods used to measure the performance of the predictive coding tool being used.

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If it used these sampling methods, the Census Bureau says, there is a 90% chance that its estimate of America's population would be within 0.1% of the true number.

ECONOMIST: Statistics