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This paper from the University of Wisconsin Cooperative Extension provides a guide using different types of sampling and outlines a range of strategies that can be used when drawing a sample.


  • The sample: who and what
  • Sampling for generalizability: probability sampling
  • Strategies
  • Simple random sample
  • Systematic sample
  • Stratified sample
  • Sample size
  • Sampling for other purposes: non probabilty sampling
  • Strategies
  • Quota sample
  • Purposeful sampling
  • Sample size
  • Summary
  • References
  • Appendix 1. Table of random numbers
  • Appendix 2. Recommended sample sizes for two different precision levels


Taylor-Powell E. (1998), Sampling, Program Development and Evaluation, Madison Wisconsin, Cooperative Extention, University of Wisconsin-Extension. Retrieved from

Originally sourced from MyMandE

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