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  2. Survey sampling - Wikipedia

    en.wikipedia.org/wiki/Survey_sampling

    In non-probability samples the relationship between the target population and the survey sample is immeasurable and potential bias is unknowable. Sophisticated users of non-probability survey samples tend to view the survey as an experimental condition, rather than a tool for population measurement, and examine the results for internally ...

  3. Survey data collection - Wikipedia

    en.wikipedia.org/wiki/Survey_data_collection

    With the application of probability sampling in the 1930s, surveys became a standard tool for empirical research in social sciences, marketing, and official statistics. [1] The methods involved in survey data collection are any of a number of ways in which data can be collected for a statistical survey. These are methods that are used to ...

  4. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    In practice, the sample size used in a study is usually determined based on the cost, time, or convenience of collecting the data, and the need for it to offer sufficient statistical power. In complex studies, different sample sizes may be allocated, such as in stratified surveys or experimental designs with multiple treatment groups.

  5. Sampling (statistics) - Wikipedia

    en.wikipedia.org/wiki/Sampling_(statistics)

    A visual representation of the sampling process. In statistics, quality assurance, and survey methodology, sampling is the selection of a subset or a statistical sample (termed sample for short) of individuals from within a statistical population to estimate characteristics of the whole population.

  6. The methodology behind The Breakthrough polling project

    www.aol.com/methodology-behind-breakthrough...

    Results for the survey are collected online from Friday through Monday each week, in English, among a nationwide sample of approximately 1,000 adults per week via the SSRS Opinion Panel Omnibus ...

  7. Opinion poll - Wikipedia

    en.wikipedia.org/wiki/Opinion_poll

    An opinion poll, often simply referred to as a survey or a poll (although strictly a poll is an actual election), is a human research survey of public opinion from a particular sample. Opinion polls are usually designed to represent the opinions of a population by conducting a series of questions and then extrapolating generalities in ratio or ...

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