Question

1.
A class of 30 students took a mock exam in maths. They were given
percentage marks as follows:
62, 20, 48, 50, 78, 91, 57, 82, 46, 51, 62, 50, 72, 73, 63, 52, 41.37,
28, 46, 71, 75, 36, 28, 44, 90, 51, 28, 60, 18.
Construct a frequency distribution table using equal class intervals.​

Answer 1

Step-by-step explanation:

Class Interval

Frequency

10-20

20-30

30-40

40-50

50-60

60-70

 

10

12

7

7

8

3

 

(i) For Cumulative Frequency 30−40 frequency is 7

(ii) Size is 11

Mid point for cumulative frequency 30−40 is 35.

(iii) Range =70−10=60

Answer 2

Answer:

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