The following table gives production yield per hectare of wheat of 100 farms of a village.
Production yield (in kg/ha) | 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 ogive.
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Solution
The cumulative frequency distribution of more than type can be obtained as follows.
Production yield (lower class limits) |
Cumulative frequency |
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 |
Taking the lower class limits on x-axis and their respective cumulative frequencies on y-axis, its ogive can be obtained as follows.
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