In this case, i used:
1° - Select Tool: To remove the "Weekly sales" and "Store Volume" columns.
2° - Sort Tool: To sort the "Transf. in year" column in descending order.
3° - Filter Tool: To filter only the "south" region.
4° - SampleTool: To show only the first 5 customers ID with the highest average transactions.
Solution for Practice Exercise 1