In statistics, a population is the group on which information is being gathered and analyzed. A sample is a representative selection of the population.

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 ...

This “target” sample serves as a template for what a survey sample would look like if it was randomly selected from the population. In this study, the target samples were selected from our synthetic ...

The ACS began full-scale operation in 2005 covering only the household population; since 2006 it also includes group quarters such as college dormitories and prisons, so it now covers the entire U.S.

The sample sizes in these studies work out to 0.0033 to 0.00066 percent of the respective population, which are well short of 2%. Should we debunk the findings of such studies? At one time, I ...

Communiqué on Major Data of 1% National Population Sample Survey in 2005. National Bureau of Statistics. 16 March 2006. Approved by the State Council, China carried out 1% National Population Sample ...