Question

which step comes last when using the divide-center method to find the trend line on a scatterplot?
○ approximate the center of the cluster located on the left side of the line, and repeat for the right side of the line,
○ connect the two centers to produce the trend line.
○ disregard all outliers.
○ draw a vertical line so that each side has the same number of data points.

Explanation:

To determine the last step of the divide - center method for finding a trend line on a scatterplot, we analyze the steps of the method:

1. First, we disregard all outliers (this is an initial step to focus on the main cluster of data).
2. Then, we draw a vertical line so that each side has the same number of data points (this divides the data into two groups).
3. Next, we approximate the center of the cluster on the left side of the line and repeat for the right side (finding the centers of the two groups).
4. Finally, we connect the two centers to produce the trend line (this is the last step as it results in the trend line after the centers are found).

Answer:

B. Connect the two centers to produce the trend line.