scatter graph
This type of graph is used to find out if there is a relationship between the variables in a set of data.
The data is presented as pairs of values, and every pair is plotted as coordinates on a graph.
If there is a relationship between both sets, the points tend to lie in a straight line.
We can use the following as an example.
The height and weight of a group of people are measured, and the data is plotted on a graph. Each dot on the diagram represents a person’s weight against their height.
Another name for scatter graph is scatter diagram.