Question

9. The marks scored by 40 students of class IX in Mathematics are given below:
81, 55, 68, 79, 85, 43, 29, 68, 54, 73, 47, 35, 72, 64,95, 44, 50, 77, 64, 35, 79,52, 45, 54, 70, 83, 62, 64,72, 92, 84, 76, 63, 43, 54, 38, 73, 68, 52, 54.​

Answer 1

Answer:

Given that the marks scored by 40 students of class IX in mathematics are

81,55,68,79,85,43,29,68,54,73,47,35,72,64

95,44,50,77,64,35,79,52,45,54,70,83,62

64,72,92,84,76,63,43,54,38,73,68,52,54

Class size =10

Frequency Distribution Frequency

20−30

30−40

40−50

50−60

60−70

70−80

80−90

90−100 1

3

5

8

8

9

4

2

Total 40

Step-by-step explanation:

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