Question

Which of the scatterplots have no correlation? Check all that apply.

On a graph, points curve up and down.
On a graph, points are grouped together to form a horizontal cluster.
On a graph, points are grouped together to form a vertical cluster.
On a graph, points are grouped together and decrease.
On a graph, points are scattered over the graph.

Answer 1

No correlation:
- Points are grouped together to form a horizontal cluster.
- Points are grouped together to form a vertical cluster.
- Points are scattered over the graph.

(“Curve up and down” shows a nonlinear relationship, and “grouped together and decrease” shows a negative correlation.)