Question

CASE STUDY QUESTION 2-The marks obtained by 40 students of class ix in an examination are given below: 18,8, 12, 6, 8, 16, 12, 5, 23, 2, 16, 23, 2, 10, 20, 12, 9, 7, 6, 5, 3, 5, 13,21,13,15,20 , 24, 1, 7 ,21, 16, 13, 18, 17 ,16 ,23, 7, 3 ,18 Present the data in the form of a frequency distribution using the same class size , one such class being 0-5,5-10,10-15, 15-20 etc. By using this data answer the following questions:-
Q(a) What is the class size? *
(i) 5
(ii)10
(iii)15
(b) What is the class mark of class 15-20 *
(i) 20
(ii) 17.5
(iii)15
(c) How many students scored more then 14 but less then 25 *
(i)18
(ii) 17
(iii) 8
(d) what is the upper limit of 20-25 *
20
25
45
(e) what is the Range of above data?
(ii)24
(ii)23
(iii) 25

Answer 1

Answer:

1.15

2. 20

3. 8

4. 25

5. 23

Step-by-step explanation:

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