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Bilton high school - PowerPoint PPT Presentation

Test the questionnaire on a few people first to see if it works OK or needs amending.

Stratified Random Sampling. After producing a questionnaire for your survey (see Questionnaires and Surveys) you will need to organise a sample. Pilot survey:. Test the questionnaire on a few people first to see if it works OK or needs amending. Sample Size and Type:.

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Bilton high school - PowerPoint PPT Presentation

Test the questionnaire on a few people first to see if it works OK or needs amending.