1. Define and describe historical research. describe a situation in which historical research would be appropriate (ex).
2. describe the difference between external and internal evidence and give exs of each.
3. Provide an explanation and an ex of the following descriptive research designs:
• Observation studies
• Correlation research
4. Provide an explanation and an ex for the following developmental designs"
• Cross-sectional study
• Longitudinal study
• Survey research
5. Provide an explanation and an ex of sampling bias.
6. describe the difference between probability sampling and nonprobability sampling.