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The following table gives production yield per hectare of wheat of 100 farms of a village:
Production yield
50-55
55-60
60-65
65-70
70-75
75-80 in kg per hecctare
Number of farms
2
8
12
24
38
16
Draw ‘less than’ ogive and ‘more than’ ogive.
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Prepare a table for less than type
Production yield
No. of farms
Production yild (less than)
Cumulative frequency
Suitable points
50-55
2
55
2
(55, 2)
55-60
8
60
10
(60, 10)
60-65
12
65
22
(65, 22)
65-70
24
70
46
(70, 46)
70-75
38
75
84
(75, 84)
75-80
16
80
100
(80, 100)
Now, plot the less than ogive using suitable points.

Again, prepare a table for more than type.
Production yield
No. of farms
Production yield (more than)
Cumulative frequency
Suitable points
50-55
2
50
100
(50, 100)
55-60
8
55
98
(55, 98)
60-65
12
60
90
(60, 90)
65-70
24
65
78
(65, 78)
70-75
38
70
54
(70, 54)
75-80
13
75
16
(75, 16)
Now, plot the more than ogive with suitable points.
art

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