QUESTION 2

A groups of students amended a exurse in Statister on Saturdays ev The murder of Saturdays on which student war absent was rootded below and the is drawn for the dem

Number of Saturdays absent

Final mark (6)

2

78 83 75 55

17 Write down the range of the mokained

If the leamers had to obtain 32 marks in pass the ust, estimate the parcontage of the (2)

fans that failed the wat 14 In arcemling onin, the second mark o 21. the third mark 30 and the soxit: mark

The seventh and eighth ads are the same. The average mark for this test is 54.

36

Fill in the marks of the remaining leaners in ascending onde

2.1 Dedermine the equation of the least squarni regression line

2.2 Draw the least sepass regression line on the grid provided on the DIAGRAM SHEET

2.3 Calculate the correlation coefficient.

2.4 Comment on the strength of the correlacion

2.5 Fa student scored 52%, would it be accurate to predict that he or she was absent for days? Motivate your answer

(2)

(3)