case selection

case selection

how many cases do we need to study

single case study

mid range case studies

large- N case studies

Know which type of method (qualitative vs. quantitative) we are more like to use in each type of case study

sample

population

random sampling

non random sampling

Simple random samples

systematic random samples

clustered sampling

random digit dialing

address based sampling

over sampling

under sampling

Quota sampling

Purposive sampling

Convenience sampling

Link-traced sampling

snowball

respondent-driven

adaptive

Selection bias

Recruitment

Privacy, image, burden, payoff

Retention

Attrition bias