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The two curves intersect at the point P(375, 100)
Hence, median = 375

Example-2: For the following frequency distribution, draw the two types of
cumulative frequency curves and determine the median.
Classes Frequency
5 - 10 2
10 - 15 12
15 - 20 2
20 - 25 4
25 - 30 3
30 - 35 4
35 - 40 3
Solution:
From the given table, we prepare the 'more than' type cumulative frequency as shown
below:
More than 35 3

More than 30 7
More than 25 10
More than 20 14
More than 15 16
10