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

A representative sample is a technique used to get insights about a targeted population group. It uses a small group to proportionally reflect specified characteristics in a larger, target ...

Sample Survey Theory vs. General Statistical Theory: Estimation of the Population Mean, International Statistical Review / Revue Internationale de Statistique, Vol. 40, No. 1 (Apr., 1972), pp. 1-12 ...