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Q.Why is a pilot survey useful before finalising the questionnaire for a project?

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Testing the questionnaire on a small group first catches problems while they're still cheap to fix, before they've been baked into hundreds of real responses.

What a pilot survey catches

A pilot (trial) survey is run on a small sample before the full questionnaire goes out to the whole target group. It typically reveals:

  • Ambiguous wording — a question that different respondents clearly interpret differently.
  • Missing response options — a multiple-choice question whose options don't cover what respondents actually want to say. …

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