A scatter plot is a two-dimensional chart that shows the relationship between two variables.
To do this, a series of values are plotted on an x-axis and a y-axis, with each axis representing a variable and each value representing a dot. Scatter plots often include an explanatory variable, such as years of education, and what might be considered a response variable, such as annual income. When the dots are plotted against these two axes, scatter plots communicate the strength and type of relationship that exists between these variables.
Include a legend if more than one set of values is being visualized.
Never overlap labels for points.
Never use complex symbols as point markers.
Never include more than 2 sets of values.
The title should explain the unit of analysis.
Include point labels or markers for specific observations.
Don’t use a scatter plot chart if there are an excessive number of overlapping values.