1. What is Categorical Data and How it is represented in Pandas?
2. How can a Data Frame be Converted to an Excel File?
3. What is Multi-Indexing in Pandas?
4. How to select Specific Data-types to Include or Exclude in the Data Frame?
5. How to Convert a Data Frame into a Numpy Array?
6. How to Split a Data Frame according to a Boolean Criterion?
7. What is Time Series in Pandas?
8. What is Time Delta in Pandas?
9. What is Data Aggregation in Pandas?
10. Difference between merge() and concat()?