Question

3. The marks obtained by 30 students in a section of
Class IX in a class test of 100 marks are as follows:
75, 35, 41, 41, 16, 28, 75, 45, 55, 25, 41, 45, 37, 28, 75,
82, 55, 61, 75, 19,75, 61, 19, 28, 19, 61, 28, 25, 16, 16


(i) Name the data present in the above form.
(ii) Arrange the above data in arrayed form.​

Answer 1

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1 :-

• Above data is in raw form or ungrouped because it is not arranged.

2 :- Arrayed form :-

16,16,16,19,19,19,25,25,28,28,

28,28,35,37,41,41,41,45,45,55,

55,61,61,61,75,75,75,75,75,82

___________________________________________

Arrayed form :-

• The data arranged in order-ascending or descending order is called arrayed data.

• Example: The marks obtained by 5 students in a Social test as given below:

• 15,45,50,60,70

Answer 2

Answer:

Above data is in raw form or ungrouped because it is not arranged.

2 :- Arrayed form :-

16,16,16,19,19,19,25,25,28,28,

28,28,35,37,41,41,41,45,45,55,

55,61,61,61,75,75,75,75,75,82

___________________________________________

Arrayed form :-

The data arranged in order-ascending or descending order is called arrayed data.

Example: The marks obtained by 5 students in a Social test as given below:

15,45,50,60,70