| A | B |
|---|
| triangulation | multiple methods |
| integrated or expansion | mixed methods |
| experimental design | randomly assigned |
| quasi-experimental | not randomly assigned |
| interrupted time series design | collecting data many times |
| nonequivalent comparison group design | existing group, not random |
| regression discontinuity design | person scoring above or below a certain point |
| cross-sectional design | snapshot in time |
| time-series design | demos trends or changes over time |
| sampling | units to study |
| purposive sampling | explore/understand small group or case |
| random sampling | each unit has a chance to be selected |
| stratified random sampling | differences among subgroups |
| cluster sampling | covers large geographical regions |
| cost benefit analysis | comparing costs and benefits |
| cost effectiveness analysis | comparing cost of programs for the same outcome |
| cost utility analysis | analyze alternatives by comparing costs |
| cost feasibility analysis | looks at the costs in planning stage |
