Edexcel GCSE Statistics · 1ST0
Specification 1b.04, 1d.01, 1d.04 · Paper 1, Paper 2
Data collected first-hand for the investigation being carried out.
Revise: Initial planningA questionnaire is a suitable way to collect these primary data because people can report listening that takes place outside school, where the investigator cannot readily observe it. Its question should give the agreed definition, specified week and unit. A small pilot survey can check whether people understand these instructions before the full collection begins.
- Revise: Constraints in sourcing data
Data collected by the person using it, or collected specifically for them and their investigation.