General Mathematics Paper 2, WASSCE (SC), 2020

Question 10

The table shows the distribution of marks obtained by students in an examination.


Marks (%)

0 - 9

10 - 19

20 - 29

30 - 39

40 - 49

50 - 59

60 - 69

70 - 79

80 - 89

90 - 99

Frequency

7

11

17

20

29

34

30

25

21

6

  1. Construct a cumulative frequency table for the distribution.
  2. Draw the cumulative frequency curve for the distribution.
  3. Using the curve, find, correct to one decimal place, the:

(i) median mark;
(ii) lowest mark for distinction if 5% of the students passed with distinction.

Observation