2.2.1 Steps to draw the Line of Best Fit


Steps to draw a line of Best Fit
(i) Select suitable scales for the x-axis and the y-axis, make sure the points plotted accurately and the graph produced is large enough on the graph paper,
(ii) Mark the points correctly,
(iii) Use a long and transparent ruler to draw the line of best fit.

Step 1 : Select the suitable scale on x and y axis 

(the graph produced must be more than 50% of the graph paper)
 

 

Step 2 : Mark the points correctly
 

 

Step 3 : Draw the Line of Best Fit
 
* Note
 -the line passes through four points 
-one point is above the line
-one point is below the line


 

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