They’re a way to tell a story visually and can provide a quick assessment of the relationship between different data sets. People use bubble charts for a variety of reasons. These charts can illustrate a third variable, often by using color. But a scatter plot generally only compares two variables since they use dots that are all the same size. ![]() Bubble clouds feature numerous bubbles packed together, usually depicting only one variable, such as population or dollar amount.Ī scatter plot chart is similar to a bubble chart and serves as the foundation for the latter. These charts are also called packed circle charts or circular packing. Each color could signify a particular trait that differentiates it from other data points included in the chart. Examples might include population density or the size of a target market in specific cities or countries.īubble charts can help you visualize more than three variables by introducing different colored bubbles. The bubbles’ horizontal and vertical positioning are latitude and longitude coordinates. In a bubble map, a bubble or set of bubbles is added on top of an image on a map, which is also called a cartogram. A labeled bubble chart is typically used when there is a small number of data points. The only difference between a basic bubble chart and a labeled one is that the bubbles are labeled instead of relying on a legend. ![]() However, the best type of bubble chart to use depends on your data set. Research indicates that Swedish global health expert and data visionary Hans Rosling was the first to use this chart style to visualize health globally more than 200 years ago. Variations of Bubble Chartsīubble charts have been around for centuries. A bubble chart could also show total sales or sales growth by geography, using a map instead of a graph. Visualizing project portfolios via bubble charts can help companies find “attractive” clusters in one area of a graph and compare those with “less attractive” projects or opportunities in a different area of the graph, such as low value, high cost and high risk. Business Uses for Bubble Chartsįor businesses, bubble charts are a great tool to show the relationship between variables and compare factors such as cost, value and risk. In a single bubble chart, we can examine the relationships between any three variables (A to B, B to C, and A to C), as well as make a three-way comparison between them. However, the addition of marker size as a dimension allows for comparison of up to three variables within bubble charts. When Should You Use Bubble Charts?Ī bubble chart is primarily used to depict and show relationships between numeric variables. Some examples where bubble charts are often useful include consumer satisfaction ratings, revenue projections and mapping, and production costs of particular products. The position of the bubble on the x- and y-axis illustrate two additional data points. How do you read a bubble chart? Each dot corresponds to a data point - the bigger the bubble, the larger the value. Bubble charts can make it easy to digest a relatively large amount of information, but are not ideal for illustrating exact values.There are different kinds of bubble charts, including some that use different colors, shapes and labels to convey information.Bubble charts illustrate three different variables, making them uniquely valuable in displaying certain types of information.Unlike other types of graphs, a bubble chart can illustrate the relationship between three variables instead of just two. It is a cousin of the scatter chart, except data points are replaced with bubbles. What Is a Bubble Chart?Īlso called a bubble plot, a bubble chart is a data visualization method that displays multiple circles in a two-dimensional plot. ![]() Bubble charts are one valuable type of data visualization tool that can help businesses analyze data and make a point in a concise, visual and effective way. Sometimes visualizations are a much better way to convey information, show trends or really drive home a point. East, Nordics and Other Regions (opens in new tab)
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