Complete question:
Which step comes last when using the divide-center method to find the trend line on a scatterplot?
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.
C Disregard all outliers.
D Draw a vertical line so that each side has the same number of data points.
Answer:
The correct option is B
Explanation:
There are three steps to find the trend line on a scatter plot after plotting the dots. These steps are:
STEP ONE:
Draw a vertical line so that each side has the same number of data points.
STEP TWO:
Mark with a special sign, the middle value in each of the two sets obtained in the previous step.
STEP THREE:
Join the two marks mentioned in the point with a straight line, and extend it to the edges of the graph. This line called the trend line and this is the last step.
So the answer is letter B.