Question

practice identifying clusters and outliers. which scatterplots have clusters? check all that apply.

Explanation:

Step1: Recall the definition of a cluster

A cluster in a scatter - plot is a group of points that are close together.

Step2: Analyze each scatter - plot

• For the first scatter - plot: The points are spread out relatively evenly with no distinct groupings.
• For the second scatter - plot: There is a group of points towards the bottom - right and some points above them, forming clusters.
• For the third scatter - plot: The points are too few and far apart to form clusters.
• For the fourth scatter - plot: There is a group of points towards the right - side (upper and lower right) forming clusters.

Answer:

The second and fourth scatter - plots.