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  2. Secondary data - Wikipedia

    en.wikipedia.org/wiki/Secondary_data

    Secondary data. Secondary data refers to data that is collected by someone other than the primary user. [1] Common sources of secondary data for social science include censuses, information collected by government departments, organizational records and data that was originally collected for other research purposes. [2]

  3. Secondary research - Wikipedia

    en.wikipedia.org/wiki/Secondary_research

    Research. Secondary research involves the summary, collation and/or synthesis of existing research. Secondary research is contrasted with primary research in that primary research involves the generation of data, whereas secondary research uses primary research sources as a source of data for analysis. [1] A notable marker of primary research ...

  4. Comparative research - Wikipedia

    en.wikipedia.org/wiki/Comparative_research

    Secondary analysis of quantitative data is relatively widespread in comparative research, undoubtedly in part because of the cost of obtaining primary data for such large things as a country's policy environment. This study is generally aggregate data analysis. Comparing large quantities of data (especially government sourced) is prevalent. [4]

  5. Cross-sectional study - Wikipedia

    en.wikipedia.org/wiki/Cross-sectional_study

    In medical research, epidemiology, social science, and biology, a cross-sectional study (also known as a cross-sectional analysis, transverse study, prevalence study) is a type of observational study that analyzes data from a population, or a representative subset, at a specific point in time—that is, cross-sectional data.

  6. Research - Wikipedia

    en.wikipedia.org/wiki/Research

    Secondary data is data that already exists, such as census data, which can be re-used for the research. It is good ethical research practice to use secondary data wherever possible. [43] Mixed-method research, i.e. research that includes qualitative and quantitative elements, using both primary and secondary data, is becoming more common. [44]

  7. Wikipedia : Identifying reliable sources (science)

    en.wikipedia.org/wiki/Wikipedia:Identifying...

    A primary source in science is one where the authors directly participated in the research. They filled the test tubes, analyzed the data, or designed the particle accelerator, or at least supervised those who did. Many, but not all, journal articles are primary sources—particularly original research articles.

  8. Secondary source - Wikipedia

    en.wikipedia.org/wiki/Secondary_source

    In scholarship, a secondary source[1][2] is a document or recording that relates or discusses information originally presented elsewhere. A secondary source contrasts with a primary, or original, source of the information being discussed. A primary source can be a person with direct knowledge of a situation or it may be a document created by ...

  9. Meta-analysis - Wikipedia

    en.wikipedia.org/wiki/Meta-analysis

    Meta-analysis is a method of synthesis of quantitative data from multiple independent studies addressing a common research question. An important part of this method involves computing a combined effect size across all of the studies. As such, this statistical approach involves extracting effect sizes and variance measures from various studies ...