Question 1

What is a bubble chart?

Accepted Answer

A bubble chart is an extension of a scatter plot that adds a third dimension: the size of each data point (bubble). The X axis, Y axis, and bubble size each represent a different variable, making bubble charts ideal for visualizing three-variable relationships in a single view.

Question 2

When should I use a bubble chart?

Accepted Answer

Use a bubble chart when you have three numeric variables and want to show the relationship between all three simultaneously. Common examples include GDP vs life expectancy vs population size, or advertising spend vs revenue vs market share.

Question 3

How do I enter data for the bubble chart?

Accepted Answer

Enter X values, Y values, and Bubble Size values as comma-separated lists in the corresponding fields. Each position in the list forms one bubble — the first X value pairs with the first Y and first size value, and so on.

Question 4

How does bubble size work?

Accepted Answer

The Bubble Size values control the relative area of each bubble on the chart. Larger numbers produce larger bubbles. The chart automatically scales the smallest and largest bubbles to fit within a readable range so all data points remain visible.

Question 5

What export formats are available for the bubble chart?

Accepted Answer

You can export your bubble chart as PNG, JPG, or SVG. PNG is recommended for web pages and presentations. SVG scales perfectly for print or large-format displays. JPG produces smaller files suitable for email attachments or document embedding.

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