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Worked Examples · Example 7
Q.

Find the median from the following discrete series (the same data as Worked Example 2):

Marks (x)1020304050
Number of students (f)461073
ChseodishaTextbookSubjectiveImportance★★★★★est
15% · 11/71 Questions
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xfCumulative frequency (cf)
1044
20610
301020
40727
50330

N = 30, so N2=15\dfrac{N}{2} = 15. …

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