This workflow shows three different varieties in which the Scatter Plot node can be used: standard settings, multiple selection enabled, colors for group information assigned to data points.
What is a scatter plot? A scatter plot represents input data rows as points in a two-dimensional plot. It is useful for bivariate visual exploration as you can easily display in a two-dimensional space a strong relationship between two features (columns) in the data. Interactively experimenting with different input columns on the x-y axis and with different graphical properties can be an efficient strategy to find those relationships.