- Questionnaire
- Random errors
- Ratio scale
- Reflexivity
- Reliability
- Replication
- Representative sample
- Research design
- Sample
- Sampling
- Sampling frame
- Self-administered questionnire
- Semi-structured interview
- Simple random sampling
- Snowball sampling
- Statistical inference
- Stratified random sampling
- Structured interview
- Thematic analysis
- Transcripts
- Unstructured interview (open-ended)
- Validity
- Variable
- Random errors
- Ratio scale
- Reflexivity
- Reliability
- Replication
- Representative sample
- Research design
- Sample
- Sampling
- Sampling frame
- Self-administered questionnire
- Semi-structured interview
- Simple random sampling
- Snowball sampling
- Statistical inference
- Stratified random sampling
- Structured interview
- Thematic analysis
- Transcripts
- Unstructured interview (open-ended)
- Validity
- Variable