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  2. Huffington Post / YouGov Public Opinion Polls

    data.huffingtonpost.com/yougov/methodology

    There are many non-sampling errors, common to all surveys, that can include effects due to question wording and misreporting by respondents. In a telephone survey, which begins with a random sample of phone numbers, such errors can occur due to those not covered by the sample, those who cannot be reached and those who do not respond to the survey.

  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. Survey methodology - Wikipedia

    en.wikipedia.org/wiki/Survey_methodology

    Survey methodology is "the study of survey methods". [1] As a field of applied statistics concentrating on human-research surveys, survey methodology studies the sampling of individual units from a population and associated techniques of survey data collection, such as questionnaire construction and methods for improving the number and accuracy of responses to surveys.

  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. TODAY/AOL 'Ideal to Real' body image survey results

    www.aol.com/lifestyle/2014-02-24-loveyourselfie...

    TODAY/AOL 'Ideal to Real' body image survey results. Brynn Mannino. Updated July 14, 2016 at 10:10 PM. Show comments. Advertisement. Advertisement. In Other News. Entertainment. Entertainment.

  7. Survey sampling - Wikipedia

    en.wikipedia.org/wiki/Survey_sampling

    Bias in surveys is undesirable, but often unavoidable. The major types of bias that may occur in the sampling process are: Non-response bias: When individuals or households selected in the survey sample cannot or will not complete the survey there is the potential for bias to result from this non-response. Nonresponse bias occurs when the ...