Common problems and how to fix them
The traps that bias a question
- A poorly worded question produces useless or biased data. Learn to spot and fix these.
Leading questions
- A leading question pushes the respondent toward an answer.
- ✗ "Don't you agree the canteen food is overpriced?"
- ✓ "How would you rate the value of the canteen food?" (with a neutral rating scale).
Loaded or emotive words
- Loaded words carry judgement and sway the answer.
- ✗ "Should the school ban its unhealthy junk food?"
- ✓ "Should the school change the food it offers? Yes / No / Unsure."
Double-barrelled questions
- A double-barrelled question asks two things at once, so a single answer is ambiguous.
- ✗ "Is the canteen food tasty and good value?" (What if it is tasty but expensive?)
- ✓ Split into two questions — one about taste, one about value.
Ambiguous or vague questions
- Vague wording means people interpret it differently.
- ✗ "Do you exercise regularly?" ("Regularly" means different things to different people.)
- ✓ "How many days in a typical week do you exercise for 30+ minutes?"
Jargon or complex wording
- Hard words or technical terms confuse respondents.
- ✗ "Do you utilise the institution's culinary facilities frequently?"
- ✓ "How often do you buy food from the canteen?"
Assuming (presuming) questions
- An assuming question takes something for granted.
- ✗ "How much do you spend at the canteen each day?" (assumes they buy food there)
- ✓ Ask a filter question first: "Do you buy food from the canteen? Yes / No", then only buyers get the spending question.
Sensitive or hard-to-recall questions
- Sensitive topics cause non-response or dishonest answers — use ranges and keep it anonymous.
- Hard-to-recall questions ("exactly how many times last year…") get guesses — ask about a recent, manageable period instead.
Improve this survey question: "Don't you think the disgusting canteen food should be replaced?"
Step 1 — Diagnose the faults
- It is leading ("Don't you think…" invites agreement).
- It uses a loaded word ("disgusting").
- It offers no response options.
Step 2 — Rewrite it neutrally
Step 3 — Explain the fix
Test yourself
Practice by grade
One question each at Achieved, Merit and Excellence. Have a go, then compare with the model answer.
Achieved
Name the fault in this question: "Is the canteen food cheap and healthy?"
Merit
Rewrite this leading question neutrally and explain your change: "Don't you agree that our school library is excellent?"
Excellence
A survey asks everyone: "How much do you spend on cigarettes each week?" Identify every problem and redesign this part of the survey.