I’m sure most of us have experience in drawing lines of best fit, where we line up a ruler, think “this seems about right”, and draw some lines from the X to the Y axis. In a room full of people, ...

The line of best fit is drawn so that the points are evenly distributed on either side of the line. There are various methods for drawing this 'precisely', but you will only be expected to draw ...

After plotting points on a graph, draw a line of best fit to present the data and make it easier to analyse. If there is no link between variables, then there will be no clear pattern of points ...