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From Wikipedia, the free encyclopedia. With the application of probability samplingin the 1930s, surveys became a standard tool for empirical researchin social sciences, marketing, and official statistics.[1] The methods involved in survey data collectionare any of a number of ways in which data can be collectedfor a statistical survey.
The purpose of sampling is to reduce the cost and/or the amount of work that it would take to survey the entire target population. A survey that measures the entire target population is called a census. A sample refers to a group or section of a population from which information is to be obtained. Survey samples can be broadly divided into two ...
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Large samples can often be administered more efficiently by using optical character recognition. Mail is subject to postal delays and errors, which can be substantial when posting to remote areas, or given unpredictable events such as natural disasters. Surveys are limited to populations that are contactable by a mail service.
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