Peter attempted to use the divide-center method to find the line of best fit on a scatterplot. On a graph, points are grouped to
gether and increase. A vertical dotted line goes through the points. There are 4 points to the left of the line, and 6 points to the right. What was his mistake? He had a different number of points to the left of the vertical line than to the right of the vertical line. He had a different number of points above the line of best fit than below the line of best fit. He didn’t approximate the center of the cluster located on the left side of the vertical line and of the cluster located on the right side of the vertical line. He didn’t connect the centers of the clusters on the left side and right side of the vertical line to produce the line of best fit.
So every triangle has to add up to 180° so for 11 you would have to find out 180-84-36 which would be 60 and because there is a right angle (90°) or the little square you do 90-60 and get 30 then you do 180-86-30 getting you to your final answer of 64
