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 is a visual technique used to find a trend line on a scatterplot. The sequence of steps is:

1. Disregard all outliers to avoid skewing the line.
2. Draw a vertical line to divide the remaining data points into two equal halves (left and right sides).
3. Approximate the center of the cluster on the left side, and repeat for the right side.
4. Connect the two centers with a straight line to produce the final trend line.

Identify the last step

Connecting the two centers to produce the trend line is the final step in this process.

Answer:

• (A) Approximate the center of the cluster located on the left side of the line, and repeat for the right side of the line.
• (B) Connect the two centers to produce the trend line. (Correct answer)
• (C) Disregard all outliers.
• (D) Draw a vertical line so that each side has the same number of data points.