A supermarket recorded, for each of 12 weeks last winter, the number of woolly hats it sold and the number of tins of soup it sold. The scatter graph shows this information.(a) Describe the correlation shown by the scatter graph.
(b) The manager says: "This shows that selling woolly hats affects how much soup our customers buy."
Explain why the scatter graph does not support what the manager says.
(c) The manager wants a line of best fit to be drawn, and insists that it must pass through (0, 0).
Explain why drawing the line through (0, 0) would not be sensible here. ●●●●●Level 55 marksStart→