a. What are descriptive statistics and what are inferential statistics? What are the similarities between descriptive and inferential statistics? What are the differences?
b. What are the similarities between descriptive single-case designs (which are qualitative studies, like case studies are) and small-N research designs? What are the differences? When should descriptive single-case designs be used and when should small-N research designs be used?
c. What are true experiments? How are threats to internal validity controlled by true experiments?
d. What are quasi-experimental designs? Why are they important? How are they different from experimental designs?