Surveys
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