Episode 1 of https://datavis.tech/datavis-2020
Explores motivations for visualizing data.
00:00 Intro: What is data visualization anyway and why bother?
02:35: So why use an external representation?
03:55 Example: Religions by Country
5:38 Dataviz: Stacked Bar Chart
6:27 Adding interactivity
07:19 Interaction Technique: Tooltips
(times courtesy of Sriram Sharma)