Data Analysis and Data Cleansing Quiz

What equipment did your customers rent or purchase?

• Business intelligence

• Advanced analytics

What ads will be more effective on which youtube channel?

• Business intelligence

• Advanced analytics

What reasons did customer give for cancelling their service?

• Business intelligence

• Advanced analytics

What actions will cause customers to leave your service?

• Business intelligence

• Advanced analytics

Where are our biggest market currently?

• Business intelligence

• Advanced analytics

How to define the most profitable customer? Why we need to know who is the most profitable?

What types of graph are suitable to visualize the distribution of data? show some example.

What types of graph are suitable to visualize the comparison of data? show some example.

Explain the 'Nonvolatile data' in data warehouse.

In data warehouse, why the time axis is always considered.