GB-30-03-001 · Questionnaire design
A questionnaire asks “How many hours do you exercise?” The response boxes are 0–10, 10–33, more than 33. Give two improvements to this question.
Questionnaire Design
Supplementary GCSE method — not covered in this booklet
Method
Check for
1) Missing time frame (e.g. per week) and
2) Overlapping or non-exhaustive response boxes
Worked Example (GB-30-03-001)
1)
Specify a period, for example per week.
2)
Use non-overlapping intervals, for example 0 ≤ h < 10, 10 ≤ h ≤ 33, h > 33.
Ans =
Specify a time period; remove overlap at 10.