Fourteen students each sit two French tests: one speaking test and one written test. The table gives the scores.
Speaking test scores: 10, 13, 48, 30, 35, 18, 41, 40, 22, 28, 20, 44, 37, 46.
Written test scores: 24, 44, 51, 39, 45, 29, 56, 20, 39, 49, 33, 52, 44, 52.
(a)[2]
Finish the scatter diagram.
(b)[1]
What kind of correlation is shown by this scatter diagram?
(c)[1]
On the scatter diagram, circle this point.
(d)[1]
On the scatter diagram, draw the line of best fit.
(e)[1]
Use your line of best fit to estimate the written test score for a student who scored 25 in the speaking test.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “All $4$ points plotted correctly.” …