Sample Survey. Since the first U.S. census, the same set of questions had been asked of everyone. But in 1940, the desire for additional data coincided with improvements in survey methodology and ...

Rare though a census may be, let us assume for a moment that we do a census of all pupils in classes 10, 11 and 12 in a school. The only estimates that we have generally come from sample surveys.

In statistics, a representative sample should be an accurate cross-section of the population being sampled. Although the features of the larger sample cannot always be determined with precision ...

China will conduct its fourth one-percent national sample census next year, covering a population of about 14 million, according to the General Office of the State Council.

For the 2020 PES, the Census Bureau completed 114,000 interviews out of a sample size of 161,000. REF As the Census Bureau warns, the PES “cannot be used to change the final census count,” but ...