Question

a
3. Given below is cumulative frequency
distribution of daily income of 50 workers
of a factory :
Number of
Daily income (in )
workers
More than or equal to 200 50
More than or equal to 300 42
More than or equal to 400 30
More than or equal to 500 18
More than or equal to 600
5
Draw cumulative frequency curve of more
than type for this data.​

Answer 1

Answer:

Daily income (in Rs.)

Number of workers (Frequency) f

1

Cumulative frequency less than type

100-120

12

Less than 120

12=12

120-140

14

Less than 140

(12+14)=26

140-160

8

Less than 160

(26+8)=34

160-180

6

Less than 180

(34+6)=40

180-200

10

Less than 200

(40+10)=50

Total

n=50

n=50 gives n/2=25

On the graph, we will plot the points (120, 12), (140, 26), (160, 34), (180, 40), (200, 50).