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What do you mean by Questionnaire? Give merits of a good Questionnaire.

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Questionnaire is a document containing questions related to the specific requirement of a statistical investigation for collection of information which is filled by the informants personally. 

Requirements of a good questionnaire :- 

  • Questions should be simple, clear and short. 
  • Simple alternative or multiple choice questions. 
  • Unambiguous and precise. 
  • Questions should be in sequence. 
  • Directly relative questions. 
  • Test of accuracy. 
  • No restricted questions affecting personal whims. 
  • Assurance of secrecy to the informants. 
  • Probability of a perfect answer.

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