Aisha keeps a record of the distance she runs and her average speed. These results are displayed in the scatter diagram. The vertical axis is labelled Average speed (km/h). The horizontal axis is labelled Distance (km).
(a)[2]
On the scatter diagram, plot the points below.
(b)[1]
What type of correlation is displayed by the scatter diagram?
(c)[1]
On the scatter diagram, draw a line of best fit across the points.
(d)[1]
Use your line of best fit to estimate her average speed for a distance of $6\text{ km}$.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “All $4$ points plotted correctly” …