The U.S. government now lists 1,879 endangered or threatened species of animals and plants. The census. Go to the Web site for the U.S. Census Bureau and learn about the census conducted every 10 years. How and when will data be collected for the next census? Are any significant changes in the collection process planned?

For each statement, briefly discuss possible sources of error in the measurement. Then, considering the precision with which the measurement is given, discuss whether you think the fact is believable.