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2. 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.

3. Survey (human research) - Wikipedia

   en.wikipedia.org/wiki/Survey_(human_research)

   Household surveys with at least 10,000 participants include: General Household Survey, conducted in private households in Great Britain. It is a repeated cross-sectional study, conducted annually, which uses a sample of 9,731 households in the 2006 survey.

4. Survey data collection - Wikipedia

   en.wikipedia.org/wiki/Survey_data_collection

   Mobile data collection or mobile surveys is an increasingly popular method of data collection. Over 50% of surveys today are opened on mobile devices. [6] The survey, form, app or collection tool is on a mobile device such as a smart phone or a tablet.

5. Huffington Post / YouGov Public Opinion Polls

   data.huffingtonpost.com/yougov/methodology

   The sample is selected to approximately match the joint distribution of age, race, gender, and education in the 2016 American Community Survey (ACS). This is a purposive, rather than random, method of selection, designed to eliminate selection bias and non-coverage of the target population in the panel from which respondents were drawn.

6. 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.

7. 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.