Page 11 - Data Visualization aligned

4)Bubble chart:

Column charts and line charts have 2 axes commonly – a numeric axis and a categorical

axis. The Y-Axis is the numeric axis for column and line charts. This means that the quantitative
magnitude of the plot is indicated by the position of the plot with respect to the Y-axis. Bubble
charts are different because both axes of a bubble chart are numeric. Hence, the position of the

plot is an indicator of two numeric values. The area of the plot is an indicator of the magnitude of
the third numeric characteristic

A bubble chart is a variation of a scatter chart in which the data points are
replaced with bubbles, and an additional dimension of the data is represented in the size

of the bubbles.

Just like a scatter chart, a bubble chart does not use a category axis — both horizontal

and vertical axes are value axes. In addition to the x values and y values that are plotted in a
scatter chart, a bubble chart plots

.