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  2. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. 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 ...

  3. Conjoint analysis - Wikipedia

    en.wikipedia.org/wiki/Conjoint_analysis

    Conjoint analysis is a survey-based statistical technique used in market research that helps determine how people value different attributes (feature, function, benefits) that make up an individual product or service. The objective of conjoint analysis is to determine the influence of a set of attributes on respondent choice or decision making.

  4. World Values Survey - Wikipedia

    en.wikipedia.org/wiki/World_Values_Survey

    World Values Research (WVR), registered as ISSN 2000-2777, is the official online paper series of the World Values Survey Association. [65] The series is edited by the executive committee of the Association. WVR publishes research papers of high scientific standards based on evidence from World Values Surveys data.

  5. Power (statistics) - Wikipedia

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

    Power analysis can either be done before (a priori or prospective power analysis) or after (post hoc or retrospective power analysis) data are collected. A priori power analysis is conducted prior to the research study, and is typically used in estimating sufficient sample sizes to achieve adequate power.

  6. Value tree analysis - Wikipedia

    en.wikipedia.org/wiki/Value_Tree_Analysis

    As value tree analysis is an approach that costs and computes little, it is one of the best choices for time-sensitive variable selection in empirical pilot healthcare studies. Moreover, value tree analysis offers a well-structured and strategic process for decision-making so that pilot study and patient data constraints can be accounted for ...

  7. Contingent valuation - Wikipedia

    en.wikipedia.org/wiki/Contingent_valuation

    Contingent valuation surveys were first proposed in theory by S.V. Ciriacy-Wantrup (1947) as a method for eliciting market valuation of a non-market good.The first practical application of the technique was in 1963 when Robert K. Davis used surveys to estimate the value hunters and tourists placed on a particular wilderness area.

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