Question

Which statement is true?

A. This scatter plot has no clusters and no outliers.


B. This scatter plot has one cluster and no outliers.


C. This scatter plot has one cluster and three outliers.


D. This scatter plot has one cluster and one outlier.

Answer 1

A cluster is a small group of dots close together. An outlier is a single dot far away from the rest of the dots.

The above graph has a small cluster around y 6&7 and has an outlier at (9,5)

The answer should be D.

Answer 2

The correct answer is D. This scatter plot has one cluster and one outlier.

Explanation:

From looking at the scatterplot, the majority of the points are collected on the upper left side of the coordinate grid, creating a cluster. This just means that these data points are located close to one another.

If we continue to look at the scatterplot, we can see that there is one data point at approximately (9, 5.25) that is very far from the other data points. This point is considered to be an outlier because it does not follow the general trend of the other data points and changes the data analysis significantly if included in the calculations.

Hope this helped!