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.
Always 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.
It is recommended that the title explain the unit of analysis.
It is recommended that you include point labels or markers for specific observations.
It is not recommended to use a scatter plot chart if there are an excessive number of overlapping values.