Edexcel GCSE Statistics · 1ST0
Specification 1a.03, 1d.05 · Paper 1, Paper 2
Revise: Mitigating enquiry issuesNon-response occurs when a selected participant does not respond to a survey or leaves particular questions unanswered. It reduces the usable data, but it can also introduce bias if those who respond differ from those who do not.
- Revise: Handling collected data problems
Failure to obtain any response from a selected person or organisation, for example because they cannot be contacted or do not return a questionnaire.