Question

Example 94. The following table gives you the distribution of marks secured by some students
in an examination:
Marks
No. of students
Marks No. of students
0 - 20
42
51 - 60
48
21 - 30
38
61 - 70
36
31 - 40
120
71 - 80
31.
41 - 50
84
Find: (a) Median marks.
(b) The percentage of failures if the minimum for a pass is 35 marks.​

Answer 1

Answer:

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