Types of data, methods and research design
Paper 1 – Methods of research
Types of Data
Primary data 📚 – data collected directly from the source. Analogy: It’s like cooking a new dish from scratch.
- Surveys, interviews, observations, experiments.
- Example: A questionnaire on teenagers’ use of social media.
Secondary data 📖 – data already collected by someone else. Analogy: It’s like following a recipe you found online.
- Government statistics, academic journals, media reports.
- Example: National crime statistics from the police.
Research Methods
Qualitative methods
Focus on depth, meaning, and context. Analogy: Like a detective piecing together a story.
- Interviews (structured, semi‑structured, unstructured)
- Focus groups
- Ethnography, case studies
Quantitative methods
Focus on numbers, measurement, and generalisation. Analogy: Like a scientist running a lab experiment.
- Surveys with closed questions
- Experiments, quasi‑experiments
- Statistical analysis (mean, median, standard deviation)
Mixed methods
Combines both to get a fuller picture. Analogy: Like using both a microscope and a telescope.
- Sequential explanatory design (quant → qual)
- Concurrent triangulation (qual & quant together)
Research Design
Structure of a study that determines how data are collected and analysed.
| Design | Key Features | Example |
|---|---|---|
| Experimental | Random assignment, control & experimental groups, manipulation of independent variable. | Testing the effect of a new teaching method on exam scores. |
| Quasi‑experimental | No random assignment, uses existing groups. | Comparing two schools that already use different curricula. |
| Non‑experimental | Observational or survey data, no manipulation. | Cross‑sectional survey of attitudes toward climate change. |
Exam Tips
- Define key terms – e.g., primary vs. secondary data, qualitative vs. quantitative.
- Use examples to illustrate each method or design.
- Show comparisons (e.g., experimental vs. non‑experimental) in a table or bullet list.
- Remember the strengths & weaknesses of each approach.
- Practice short, clear answers – aim for 2–3 sentences per point.
Revision
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