Early next year, George W. Bush will make a potentially historic decision about Census 2000.
The new president must decide whether to permit the United States Census Bureau for the first time to "statistically adjust" the numbers gathered in the nationwide door-to-door count.
If the numbers are adjusted, it could add millions of blacks and Hispanics to the "official" population of the United States. It could also knock millions of other people off the census rolls - people who were apparently counted twice. Most of the people removed would likely come from white households.
Either way, the Bush White House can expect criticism.
Today, the Census Bureau will release the raw, or unadjusted, numbers from the 2000 census for each of the 50 states. The US Supreme Court has ruled that the government must use these actual numbers - not the adjusted ones - to apportion seats in the House of Representatives among the various states.
However, the court left the way open to used adjusted numbers to redraw the congressional district lines inside the states. This could give minorities greater representation in Congress.
Adjusted numbers could also be used to divide up federal aid monies. Immigrant-rich states like California, Texas, and Florida could get billions of additional aid dollars over the next decade if adjusted numbers are made official.
Kenneth Prewitt, director of the Census Bureau, notes that in 1990, the estimated nationwide "net undercount" was 4 million people, or 1.6 percent. That includes an estimated 8 million people who were missed (mostly minorities) and 4 million people who were apparently counted twice (mostly whites).
Dr. Prewitt emphasizes that every census since the first one in 1790 has been merely an estimate. It is literally impossible to count every man, woman, and child, even though thousands of Census Bureau workers this year tried to do just that.
In lieu of perfection, experts have sought ways to improve the door-to-door count by statistical sampling.
Here's how it works.
For this year's regular census, America was divided into 11 million blocks. Some of these were ordinary city blocks, bounded on each side by streets. Others were country blocks that might have rural roads on three sides and a river on another.
The Census Bureau surveyed all 11 million blocks for the regular count. But for the statistical survey, Census workers examined a smaller sample - 11,800 blocks containing 314,000 housing units - randomly chosen by computer.
In July, after the regular census was finished, 6,000 workers returned to the 11,800 blocks selected for the statistical follow- up. Without using any of the data from the first census, they searched out every person in those blocks to find out who was living there on …