Learn Tableau by Working on Exciting Dashboards - Country Map

The video tutorial explains how to handle and visualize data related to movies produced in different countries using Tableau. It covers the use of country dimensions, split functions, and geographic roles to extract and map data. The tutorial also addresses handling null values and finalizing the visualization with appropriate adjustments to the map and data representation.

Explain how the size of the bubbles in the visualization is determined.

What issues might arise if some countries appear as null in the dataset?