Question

which scatterplot displays an example of a cluster?

Explanation:

A cluster in a scatter - plot is a group of data points that are close together. In the first scatter - plot, there is a group of points that are relatively close to each other (in the lower - middle part of the plot and then a bit further up), showing a cluster. In the second scatter - plot, the points are more spread out and do not form a distinct group.

Answer:

The first scatter - plot (the one with more points grouped closely together) displays an example of a cluster.