Page 2 - WS

4.Find the modal class for the following frequency distribution:
Class 5 - 14 15 - 24 25 - 34 35 - 44 45 - 54
Frequency 7 12 14 18 13
(a) 34.5-44.5
(b) 35-44
(c) 34-45
(d) 25-34

5.For the following distribution

C.I. 0-5 6-11 12-17 18-23 24-29

f 26 20 30 16 22

the class mark of the modal class is
(a) 14.5

(b) 18
(c) 17.5
(d) 17

6.For the following distribution

Marks No. of students

Less than 20 4

Less than 40 12

Less than 60 25

Less than 80 56

Less than 100 74

Less than 120 80

the modal class is
(a) 20 – 40
(b) 40 – 60

2