Question 3 [26 MARKS]

Mr ND Sewpersadh is a new educator at Wartburg Kirchdoff School. He teaches two (2) grade 12 classes. He wants to find out which of the classes performed better in the Trial Exams.

NB: The Trial Exam was out of 100

Grade 12A

57 60 85 20

15 35 46 60

48 60

68 70

70 75 33 48 78

60 45 90 85 50

Grade 128

20 29 33 35

56 56

60

35 40

60 60

3.1 Write down the minimum value for 12 B.

3.2 Calculate the median for 12A.

3.3 Calculate the mean for 12B

3.4 Calculate the probability of a learning getting above 80% in the B class, write your answer as a percentage.

3.5 Is the data of the test results discrete or continuous? Give a reason for your answer

3.6 Calculate the range of 12B.

3.7 Write down the mode for 12A.

3.8 Calculate the inter quartile range for 12B.

3.9 Mr ND Sewpersadh feels that 12A did better in the Trial exams.

Show with calculation if he is correct. Give a reason for your answer.

45 46

46 56

70 85 95

60

(2)

(3)

(3)

(3)

(3)

(2)

(2)

(3)

(5)

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