Question

Consider the marks obtained by 20 students out of 50 marks of class IX of a school in a
test 42, 40, 41, 6, 8, 30, 34, 37, 14, 12, 47, 43, 49, 21, 23, 4, 10, 17, 35, 36. Present this
data as a grouped data in exclusive form.​

Answer 1

Given : marks of class IX of a school in a

test 42, 40, 41, 6, 8, 30, 34, 37, 14, 12, 47, 43, 49, 21, 23, 4, 10, 17, 35, 36.

To Find : Present this  data as a grouped data in exclusive form.​

Solution:

42, 40, 41, 6, 8, 30, 34, 37, 14, 12, 47, 43, 49, 21, 23, 4, 10, 17, 35, 36

1st arrange data in order

4   6    8   10   12   14   17   21   23   30   34   35   36   37   40   41   42   43   47   49

Class        f

0  - 5          1  

5 - 10         2

10 - 15        3

15 - 20       1

20 - 25      2

25 - 30      0

30 - 35       2

35 - 40       3

40 - 45      4      

45 - 50      2

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Answer 2

Answer:

First arrange this in ascending form

4,6,8,10,12,14,17,21,23,30,34,35,36,37,40,41,42,43,47,49

Marks No. of students

0-5 1

5-10 2

10-15 3

15-20 1

20-25 2

25-30 0

30-35 2

35-40 3

40-45 4

45-50 2

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