Final Cover - For Printing

16. Ogive
    The cumulative frequency of a particular class is obtained by adding all the frequencies
    up to and inclusive of that class interval. An ogive is a graph of cumulative frequency
    distribution. It is also called frequency distribution curve. To draw a cumulative
    frequency distribution curve, plot the points with the upper limits of the classes on
    the x-axis and the corresponding cumulative frequencies on the y-axis.

The nature and construction procedures regarding an ogive, need a thorough verbal
explanation in addition to the provision of an embossed ogive prepared for some
data.

Weekly wage in Rs. No. of Workers Cumulative Frequencyfor less than Cumulative Frequencyfor more than

0 - 100 10 10 100

100 - 200 15 25 90

200-300 40 65 75

300 - 400 20 85 35

400 - 500 10 95 15

500 - 600 5 100 5

0

10

20

30

40

50

60

70

80

90

100

110

100 200 300 400 500 600