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  2. Questionnaire - Wikipedia

    en.wikipedia.org/wiki/Questionnaire

    A questionnaire is a research instrument that consists of a set of questions (or other types of prompts) for the purpose of gathering information from respondents through survey or statistical study. A research questionnaire is typically a mix of close-ended questions and open-ended questions. Open-ended, long-term questions offer the ...

  3. Questionnaire construction - Wikipedia

    en.wikipedia.org/wiki/Questionnaire_construction

    A common method is to "research backwards" in building a questionnaire by first determining the information sought (i.e., Brand A is more/less preferred by x% of the sample vs. Brand B, and y% vs. Brand C), then being certain to ask all the needed questions to obtain the metrics for the report. Unneeded questions should be avoided, as they are ...

  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. Self-report study - Wikipedia

    en.wikipedia.org/wiki/Self-report_study

    Questionnaires are a type of self-report method which consist of a set of questions usually in a highly structured written form. Questionnaires can contain both open questions and closed questions and participants record their own answers. Interviews are a type of spoken questionnaire where the interviewer records the responses.

  6. Empirical research - Wikipedia

    en.wikipedia.org/wiki/Empirical_research

    The researcher attempts to describe accurately the interaction between the instrument (or the human senses) and the entity being observed.If instrumentation is involved, the researcher is expected to calibrate his/her instrument by applying it to known standard objects and documenting the results before applying it to unknown objects.

  7. Survey sampling - Wikipedia

    en.wikipedia.org/wiki/Survey_sampling

    This type of sampling is common in non-probability market research surveys. Convenience Samples: The sample is composed of whatever persons can be most easily accessed to fill out the survey. In non-probability samples the relationship between the target population and the survey sample is immeasurable and potential bias is unknowable.

  8. Food frequency questionnaire - Wikipedia

    en.wikipedia.org/wiki/Food_frequency_questionnaire

    The questionnaire design was described in a 1986 paper [30] and the first research paper validating the questionnaire was published in 1990. [31] The FFQ was subsequently modified and a web version was created. [32] Pen-and-paper and web version, both available at cost. Cost is $2 per respondent for pen-and-paper version, with a minimum of $100.

  9. Research design - Wikipedia

    en.wikipedia.org/wiki/Research_design

    The choice of how to group participants depends on the research hypothesis and on how the participants are sampled.In a typical experimental study, there will be at least one "experimental" condition (e.g., "treatment") and one "control" condition ("no treatment"), but the appropriate method of grouping may depend on factors such as the duration of measurement phase and participant ...