Sampling
Sampling includes issues and approaches for who takes the survey and how representative the actual respondents are to the intended population.
Major issues for sampling
- Sample frame
- Chance error
- Non-response bias
Fowler's (ch. 3) considerations
- Comprehensiveness
- Calculability of selection probability
- Efficiency
Variations
- Simple random sampling
- Multiframe sampling
- Stratified or multi-state sampling
- Convenience sample
Discussion questions
- What are the two main factors that predict chance error?
- What are advantages to randomly selecting from a sample frame?
- What are strategies for minimizing error for each of the major issues?
- What are possible sampling strategies for these scenarios?
- Students taking an introductory programming course at DePaul (to gauge sense of belonging)
- Intranet users at a company