This is real data from real published papers, and they are often very messy. The idea is more to get you trying to pick the right variables, do the right analysis, and pick the right kind of graph. If you miss on sample restrictions or exact formulas that is OK. Please specify which tables or figures you’re trying to replicate.
In the paper assignment requirements, It says four articles to pick up. I already pick up. It is “Zheng” article which is attach below the assignment requirements.