Examples - A sample of voters is questioned in advance of an election to determine how the public perceives the candidates and the issues. A manufacturer does a survey of the potential market before introducing a new product. A government entity commissions a survey to gather the factual information it needs to evaluate existing legislation or to draft proposed new legislation. A company needs feed back on a new or existing product or service.

Statistical survey - a collection of quantitative information about members of a population

Census - a collection of information about every member of a population

Sampling (statistics) - collecting information on only a sample of a population

Opinion poll - an informal collection of opinions using sampling

Quantitative marketing research - the use of surveys to collect data for marketing purposes

Questionnaire - a series of questions used to gather information