Question

Prepare a frequency distribution the following data:
Marks: 25,30,15 5,8,10,35,39,42,7,18,26,28,31,35,11,14,18,8,15,32,36,41,45,42,15,20,33,26.

Answer 1

Answer:

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