The 'line of best fit' is a line that goes roughly through the middle of all the scatter points on a graph. The closer the ... There are various methods for drawing this 'precisely', but you ...

Plot a graph of resistance, R, in Ω on the y-axis against length, l, in cm on the x-axis). Draw the line of best fit. We can see from the graph that as the length of the wire, l, increases ...