Question

which best describes the clusters in the data set? number of fish in each tank at the pet store there is only one cluster, at 10 and 11. there is only one cluster, at 13, 14, and 15. there are two clusters at 10 and at 11. there are two clusters, at 10 and 11, and at 13, 14, and 15.

Explanation:

A cluster in a data - set is a group of data points that are close together. Looking at the dot - plot:

• The data points for 10 and 11 are grouped closely (many dots in these regions).
• The data points for 13, 14, and 15 are grouped closely (though fewer in number compared to 10 - 11, but still a distinct group).
• There is a gap (no data points) between 11 and 13.

Answer:

There are two clusters, at 10 and 11, and at 13, 14, and 15.