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5.The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of
the set is multiplied by 2, then the median of the new set
(a) is increased by 2
(b) is decreased by 2
(c) is two times of the original number
(d) Remains the same as that of the original set.

6.For the following distribution

Marks 0-10 10-20 20-30 30-40 40-50

No. of students 3 9 13 10 5

the number of students who got marks less than 40 is
(a) 13
(b) 25
(c) 10
(d) 52

7. The median of the following observations arranged in ascending order is 24. Find x.
11, 12, 14, 18, x + 2, x + 4, 30, 32, 35, 41

8.The following distribution gives cumulative frequencies of ‘more than type’
Marks obtained No of students
More than 5 or equal to 5 30
More than 10 or equal to 10 23
More than 15 or equal to 15 8
More than 20 or equal to 20 2
Change the above data into a continuous grouped frequency distribution.

9.Change the given data into a continuous grouped frequency distribution.
Weight (in kg) Number of Students
Less than 38 1
Less than 40 3
Less than 42 5
Less than 44 9
Less than 46 14
Less than 48 28

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