This statistical survey technique is a quantitative method that aims to know the opinion of a group of people concerned by related to a given topic.
The survey is done through survey questions, questionnaires, interviews, etc.
It is used to carry out a research in the most punctual way possible, consulting the target group of reference; in this way one starts from experience to arrive at a scientifically founded work. Surveys provide important information for all kinds of public-information and research fields.