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3. The following table gives production yield per hectare of wheat of 100 farms of a village.

Change the distribution to a more than type distribution, and draw its ogive.

Production yield (Upper-Class Limit) Cumulative Frequency More than or equal to 50 100 More than or equal to 55 98 More than or equal to 60 90 More than or equal to 65 78 More than or equal to 70 54 More than or equal to 75 16 Now, Taking lower class limit on the x-axis and their respective frequencies on the y-axis,

2. During the medical check-up of 35 students of a class, their weights were recorded as follows:

Draw a less than type ogive for the given data. Hence obtain the median weight from the graph and verify the result by using the formula.

Taking upper-class interval on the x-axis and their respective frequencies on the y-axis, Marking a point on the curve whose ordinate is 17.5 gives an x-ordinate= 46.5. Hence, the Median of the data is 46.5 Now, Weight (Class) Frequency Cumulative Frequency >38 0 0 38-40 3 3 40-42 2 5 42-44 4 9 44-46 5 14 46-48 14 28 48-50 4 32 50-52 3 35  Median class = 46-48;...
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