A scatter chart (also called scatter plot) uses horizontal and vertical axes to plot data points. Scatter plots show how one variable affects another, meaning you can visualize relationships and trends in the data.
View more examples of scatter plot charts.
Infogram is a free online chart maker that offers three different scatter chart types (scatter plot, grouped scatter plot and dot plot).
Here is a short guide on how to use each of them:
Scatter plot – A scatter plot can be used when one continuous variable is under the control of the experimenter and the other depends on it or when both continuous variables are independent.
Grouped scatter plot – Similar to the previous, but the points are color-coded, which means one additional variable can be displayed. The data is displayed as a collection (group) of points, each having the value of one.
Scatter charts are used mainly for correlation and distribution analysis and help to spot anomalies or outliers. They are useful when you have paired numerical data and you want to see if one variable impacts the other. A good example of scatter charts would be a chart showing how the amount of caffeine consumed affects the time people go to sleep.
Have more questions about the appropriate type of chart to use? Check out this article.