Question

120 surnames were randomly picked up from a local
telephone directly frequency distribution is given below
CI
0-3, 3-6, 6-9, 9-12, 12-15, 15-18. frequency x, 45, 43, 15, 6, y​

Answer 1

ANSWER

No. of letters Frequency Width of

interval Length of rectangle

1 - 4 6 3

3

6

×2=4

4 - 6 30 2

2

30

×2=30

6 - 8 44 2

2

44

×2=44

8 - 12 16 4

4

16

×2=8

12 - 20 4 8

8

4

×2=1

(ii) 44→6−8 interval

solution