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:

Analyze the steps of the divide-center method

The divide-center method for drawing a trend line on a scatterplot involves the following sequential steps:

1. Identify and disregard any outliers in the data set.
2. Draw a vertical line through the scatterplot so that an equal number of data points lie on the left and right sides of the line.
3. Find or approximate the center of the cluster of points on the left side, and then do the same for the cluster on the right side.
4. Connect these two center points with a straight line to produce the final trend line.

Identify the final step

Connecting the two calculated center points to draw the trend line is the final step in this procedure.

Answer:

• 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. (Correct answer)
• Disregard all outliers.
• Draw a vertical line so that each side has the same number of data points.