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The following tables 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
Number of farms 2 8 12 24 38 16
Change the distribution to a more than type distribution and draw its ogive.


Answer :

Converting the given distribution to a more than type distribution, we get

Production Yield (kg/ha) Number of farms
More than or equal to 50 100
More than or equal to 55 100-2 = 98
More than or equal to 60 98-8= 90
More than or equal to 65 90-12=78
More than or equal to 70 78-24=54
More than or equal to 75 54-38 =16
From the table obtained draw the ogive by plotting the corresponding points where the upper limits in x-axis and the frequencies obtained in the y-axis are (50, 100), (55, 98), (60, 90), (65, 78), (70, 54) and (75, 16) on this graph paper. The graph obtained is known as more than type ogive curve.

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