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Q.

Find the median by drawing both types of ogives.


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a

24.2

b

77.5

c

80.5

d

78.9 

answer is C.

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Detailed Solution

Given is a table,
Question ImageThe frequency of elements shows the overview of any data or values that shows the number of times they occur.
So, the frequency distribution table is shown below,
Question ImageThe graph is shown below,
Question ImageMedian is the intersection of less than type and more than type cumulative frequency curve.
Thus, by using the graph, the median is 80.5.
Therefore, option (3) is correct.
 
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