Solve any two of the following subquestions :
(1) The median of the following data is 49.2. Find the values off, and f2, if Ef; = 90 :
Marks 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 70 – 80 80 – 90
Frequency fi15 2520f 8
10
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