Question

Marks Obtained
O or more
10 or more
20 or more
30 or more 40 or more 50 or more
Number of students
63
58
55
51
48
42
(i) Calculate the frequency of the class 30 - 40.
(i) Calculate the class mark of the class 10 - 20.​

Answer 1

Answer:

i) 51

ii) 10

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