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More than or equal to 35 3
Draw cumulative frequency curve of more than type.

11.Convert the following distribution to a less than type cumulative frequency distribution
and draw an ogive curve:
Marks Number of Students
200 - 220 5

220 - 240 4
240 - 260 6

260 - 280 8
280 - 300 0
300 - 320 4

12. For the following frequency distribution, draw a cumulative frequency curve of more than
type.
Marks Number of Students
0 - 10 5
10 - 20 3
20 - 30 4
30 - 40 3
40 - 50 3
50 - 60 4
60 - 70 7
70 - 80 9
80 - 90 7
90 - 100 8

13The daily wages of casual labourers employed by a group of limited concerns are given
below. Draw a cumulative frequency curve of less than type for the following data and
hence, find the median.
Daily wages Frequency
3 - 5 7

5 -7 10
7 - 9 23

9 - 11 51

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