Visualizing Relationships - Data Points: Visualization That Means Something - page 192

FIGurE 6-11 Scatterplot matrix with LOeSS curves

Bubbles

P Check out Hans
Rosling's now fa-
mous talks on the
Gapminder site at
www.gapminder
.org , including a
BBC documen-
tary on the joy of
statistics.

ever since Hans Rosling, Professor of International Health at Karolinska
Institute and chairman of the Gapminder Foundation, presented a motion
chart to tell his story of the wealth and health of nations, there has been
an affinity for proportional bubbles on an x-y axis. Although the motion
chart is animated to show changes over time, you can also create a static
version: the bubble chart.

A bubble chart can also just be straight up proportionally sized bubbles,
but now consider how to create the variety that is like a scatterplot with a
third, bubbly dimension.