To draft a questionnaire or schedule is an art. The success of statistical investigation depends on proper drafting of the questionnaire. It is a highly specialized job and following points should be borne in mind:
1. Brief and Limited Questionnaire:
The number of questions in a schedule should be brief and limited as possible. Only relevant questions to the problem under investigation should be added.
2. Simple and Clear:
The questions should be simple, clear and precise. Its language should be very simple so that informants may easily understand.
3. Unambiguous Questions”:
All unambiguous questions should be avoided at all, complicated and long-worded questions irritate the respondents which results in careless; replies.
4. No Personal Questions:
No personal question should be asked from, respondents. Such questions should be avoided.
5. Use of Proper Words:
Questions should be framed with right words. This ensures the validity.
6. Avoidance of Calculations:
Questions should not be based on calculations. Only those questions should be asked which the respondents may reply immediately. Moreover, questions should avoid memories.
7. Only Objective Questions:
The questions should be objective. It should be based on opinions of the individuals.
8. Sequence of the Questions:
The arrangement of the questions should be such so that no question may slip back. It must involve a logical flow of questions.
Before sending the questionnaire to the respondents, it must be properly tested.
Precise and simple instructions of filling the questionnaire should be added in the foot note.
11. Cross Examination:
The questionnaire should be set in such a way that there may be cross examination of the information supplied by the informants. In fact, it is a check on false or inaccurate answers.
12. Secret Information:
Every respondent should be ensured that information given by them shall be kept secret.
13. Attractive Questionnaire:
Proper care should be taken to make the questionnaire attractive. A well set questionnaire will certainly impress the recipient.