MATH 338

Cohort Study

studying outcome of a cause x → y?

Case study

studying causes for an outcome x? → y

Cross sectional study

studying relationship between potential cause and outcome x →? y

Observational study

no intervention

looking at data and making speculative correlation (no causation)

Experimental Study + Types

Randomized and nonrandomized

intervening, giving treatment, controlling variables

Experimental vs Observational

Intervention vs no intervention

can say cause and effect vs not

Study design

1. stat/sci q of interest

• also pop of interest

2. hypothesis to test

3. outcomes

4. predictor of interest

5. other variables

6. intervene?

7. study design?