Create surveys like a pro. Learn what kind of questions you should avoid. Make your questionnaire clear and easy to understand.
Avoid questions suggesting a certain answer. This kind of question may contain terminology or word sequence that will lead the respondent to answer in a certain way. Often they include assumptions that are or maybe not true.
AVOID QUESTION : Is green your favourite colour?
Ask about one thing in a question. Combining questions in one sentence can make it difficult for a respondent to answer and can make it impossible to interpret question correctly.
AVOID QUESTION : Please score the quality and price of product X on a scale 1 (very good) - 5 (poor).
Make sure your questions are not too long and can be interpreted in the same way by all survey participants.
Make sure your questions are in line with the survey objective. A good way to check it is to ask somebody to read your survey, or to test it on a small sample.
Don't use words that may be difficult to understand like slang, jargon or abbreviations.