A widely-used technique for collecting data from a sample drawn from a given population. Surveys are often based on probability sampling, and survey information is usually obtained through structured interviews or self-administered questionnaires. Cross-sectional surveys involve measurements made at a single point in time. Panel surveys involve measurements acquired at two or more points in time. See also data collection, population, probability sampling, sample.

Questionnaire that collects information requested by customer/client

A survey, also called questionnaires, is a method of primary data collection based on communication with a representative sample of individuals. Surveys are usually descriptive in nature, yet can also be used to provide casual explanations or explore ideas. A survey can be conducted using different information-gathering techniques such as mail-out questionnaires, in-person interviews and telephone surveys. There is also an increasing use of technology-driven fax, email and Internet-based surveys. (Level 2 activity)

Where interviews are conducted with people using pre-designed questionnaires.

A type of questionnaire that samples opion or beliefs on an issue. Unlike a questionnaire, a survey can use more than one response scale.

Data collection techniques designed to collect standard information from a large number of subjects. Surveys may include polls, mailed questionnaires, telephone interviews, or face-to-face interviews.

Studies designed to obtain information from human subjects through written questionnaires, telephone interviews, door-to-door canvassing, or similar procedures.