The scatter diagram plots each student in class A’s French written-test score against the speaking-test score. A line of best fit is already shown. The horizontal axis is marked Score in speaking test from 0 to 60. The vertical axis is marked Score in written test from 0 to 60.
(a(i))[1]
In which test did the class do better? Support your answer with a reason.
(a(ii))[1]
What sort of correlation is displayed by the scatter diagram?
(a(iii))[1]
Circle the cross that shows this student.
(a(iv))[1]
Use the line of best fit to estimate this student's written-test score.
(b(i))[2]
Find the median.
(b(ii))[2]
Find the mean.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Written test with valid reason” …