1. Illustrate and discuss historical research. Describe a condition in which historical research would be suitable (ex).
2. Illustrate out the differentiation between external and internal evidence and provide exs of each.
3. Give an explanation and an ex of following descriptive research designs:
• Observation studies
• Correlation research
4. Give an explanation and ex for following developmental designs”
• Cross-sectional study
• Longitudinal study
• Survey research
5. Give an explanation and ex of sampling bias.
6. Illustrate out the differentiation between probability sampling and nonprobability sampling.