Question

Ted and Meg have each drawn a line on the scatter plot shown below:
Which line best represents the line of best fit?

Line P, because it is closest to most data points
Line P, because it shows a positive association
Line R, because it is closest to most data points
Line R, because it shows a negative association

Answer 1

line P is the best fit, since the data points are closest to it,

 so the first answer.

Answer 2

Answer:

The line which best represents  the line of best fit is:

 Line P, because it is closest to most data points    

Step-by-step explanation:

• The line of best fit is a line which best represents the data and the data points are closely related to it.

• It is also known as a trend line.

• The line of best fit may pass through, some , none or all of the data points.

• Also if the scatter plot does not pass through all the data point then the magnitude of positive residual must be approximately equal to the magnitude of negative residual of the data points.

Hence, by looking at the scatter plot we see that all the data points lie above Line R.

Hence, the Line R will not be a line of best fit.

But all the data points lie close to the line P , hence it act as a line of best fit.